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PYSEC-2021-852
Vulnerability from pysec - Published: 2021-12-13 18:15 - Updated: 2021-12-16 19:24
VLAI
Details
lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.
Impacted products
| Name | purl | lxml | pkg:pypi/lxml |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "lxml",
"purl": "pkg:pypi/lxml"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"fixed": "12fa9669007180a7bb87d990c375cf91ca5b664a"
}
],
"repo": "https://github.com/lxml/lxml",
"type": "GIT"
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c"
}
],
"repo": "https://github.com/lxml/lxml#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776",
"type": "GIT"
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.6.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.9",
"0.9.1",
"0.9.2",
"1.0",
"1.0.1",
"1.0.2",
"1.0.3",
"1.0.4",
"1.0.beta",
"1.1",
"1.1.1",
"1.1.2",
"1.1alpha",
"1.1beta",
"1.2",
"1.2.1",
"1.3",
"1.3.1",
"1.3.2",
"1.3.3",
"1.3.4",
"1.3.5",
"1.3.6",
"1.3beta",
"2.0",
"2.0.1",
"2.0.10",
"2.0.11",
"2.0.2",
"2.0.3",
"2.0.4",
"2.0.5",
"2.0.6",
"2.0.7",
"2.0.8",
"2.0.9",
"2.0alpha1",
"2.0alpha2",
"2.0alpha3",
"2.0alpha4",
"2.0alpha5",
"2.0alpha6",
"2.0beta1",
"2.0beta2",
"2.1",
"2.1.1",
"2.1.2",
"2.1.3",
"2.1.4",
"2.1.5",
"2.1alpha1",
"2.1beta1",
"2.1beta2",
"2.1beta3",
"2.2",
"2.2.1",
"2.2.2",
"2.2.3",
"2.2.4",
"2.2.5",
"2.2.6",
"2.2.7",
"2.2.8",
"2.2alpha1",
"2.2beta1",
"2.2beta2",
"2.2beta3",
"2.2beta4",
"2.3",
"2.3.1",
"2.3.2",
"2.3.3",
"2.3.4",
"2.3.5",
"2.3.6",
"2.3alpha1",
"2.3alpha2",
"2.3beta1",
"3.0",
"3.0.1",
"3.0.2",
"3.1.0",
"3.1.1",
"3.1.2",
"3.1beta1",
"3.2.0",
"3.2.1",
"3.2.2",
"3.2.3",
"3.2.4",
"3.2.5",
"3.3.0",
"3.3.0beta1",
"3.3.0beta2",
"3.3.0beta3",
"3.3.0beta4",
"3.3.0beta5",
"3.3.1",
"3.3.2",
"3.3.3",
"3.3.4",
"3.3.5",
"3.3.6",
"3.4.0",
"3.4.1",
"3.4.2",
"3.4.3",
"3.4.4",
"3.5.0",
"3.5.0b1",
"3.6.0",
"3.6.1",
"3.6.2",
"3.6.3",
"3.6.4",
"3.7.0",
"3.7.1",
"3.7.2",
"3.7.3",
"3.8.0",
"4.0.0",
"4.1.0",
"4.1.1",
"4.2.0",
"4.2.1",
"4.2.2",
"4.2.3",
"4.2.4",
"4.2.5",
"4.2.6",
"4.3.0",
"4.3.1",
"4.3.2",
"4.3.3",
"4.3.4",
"4.3.5",
"4.4.0",
"4.4.1",
"4.4.2",
"4.4.3",
"4.5.0",
"4.5.1",
"4.5.2",
"4.6.0",
"4.6.1",
"4.6.2",
"4.6.3",
"4.6.4"
]
}
],
"aliases": [
"CVE-2021-43818",
"GHSA-55x5-fj6c-h6m8"
],
"details": "lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.",
"id": "PYSEC-2021-852",
"modified": "2021-12-16T19:24:01.272993Z",
"published": "2021-12-13T18:15:00Z",
"references": [
{
"type": "FIX",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "FIX",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "ADVISORY",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "FIX",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
}
]
}
BREW-ANIMDL-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:40 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@5.3.1",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "animdl",
"purl": "pkg:brew/animdl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.27_5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@5.3.1",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "5.3.1"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-animdl-CVE-2021-43818",
"modified": "2026-09-09T23:40:59Z",
"published": "2026-08-13T16:35:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-ANSIBLE-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-10 18:51 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.1.3",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible",
"purl": "pkg:brew/ansible"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.1.3",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.1.3"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-ansible-CVE-2021-43818",
"modified": "2026-09-10T18:51:05Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-ANSIBLE@10-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.0.2",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@10",
"purl": "pkg:brew/ansible%4010"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.7.0_6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.0.2",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.0.2"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-ansible@10-CVE-2021-43818",
"modified": "2026-09-09T23:41:05Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-ANSIBLE@12-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.0.2",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@12",
"purl": "pkg:brew/ansible%4012"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "12.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.0.2",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.0.2"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-ansible@12-CVE-2021-43818",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-ANSIBLE@13-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-10 18:51 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.1.1",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@13",
"purl": "pkg:brew/ansible%4013"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "13.8.0_2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.1.1",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.1.1"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-ansible@13-CVE-2021-43818",
"modified": "2026-09-10T18:51:29Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-ANSIBLE@9-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.0.2",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@9",
"purl": "pkg:brew/ansible%409"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.13.0_4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.0.2",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.0.2"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-ansible@9-CVE-2021-43818",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:23Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-APKLEAKS-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.1.1",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "apkleaks",
"purl": "pkg:brew/apkleaks"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.3_3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.1.1",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.1.1"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-apkleaks-CVE-2021-43818",
"modified": "2026-09-09T23:41:33Z",
"published": "2026-08-13T16:35:54Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-AWS-GOOGLE-AUTH-CVE… (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-18 15:00 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.1.3",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "aws-google-auth",
"purl": "pkg:brew/aws-google-auth"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.31"
},
{
"fixed": "0.0.37_5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.1.3",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.1.3"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-aws-google-auth-CVE-2021-43818",
"modified": "2026-09-18T15:00:27Z",
"published": "2026-08-13T16:37:01Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-BAZARR-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-15 08:48 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.1.3",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "bazarr",
"purl": "pkg:brew/bazarr"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.0_1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.1.3",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.1.3"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-bazarr-CVE-2021-43818",
"modified": "2026-09-15T08:48:06Z",
"published": "2026-08-13T16:37:10Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
BREW-BBOT-CVE-2021-43818 (GHSA-55X5-FJ6C-H6M8)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-09 23:43 – Source website
VLAI
Summary
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Details
Impact
The HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.
Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Severity
References
| URL | Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "lxml",
"resource_purl": "pkg:pypi/lxml@6.1.2",
"upstream_fixed_in": "4.6.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "bbot",
"purl": "pkg:brew/bbot"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/lxml@6.1.2",
"name": "lxml",
"resource": "lxml",
"strategy": "registry",
"subject_version": "6.1.2"
}
]
},
"details": "### Impact\nThe HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs.\n\nUsers that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5.\n\n### Patches\nThe issue has been resolved in lxml 4.6.5.\n\n### Workarounds\nNone.\n\n### References\nThe issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.\n",
"id": "BREW-bbot-CVE-2021-43818",
"modified": "2026-09-09T23:43:32Z",
"published": "2026-08-13T16:37:10Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
},
{
"type": "WEB",
"url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5043"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220107-0005"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-06"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/lxml/lxml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "lxml\u0027s HTML Cleaner allows crafted and SVG embedded scripts to pass through",
"upstream": [
"GHSA-55x5-fj6c-h6m8",
"CVE-2021-43818",
"PYSEC-2021-852"
]
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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