CVE-2020-27783 (GCVE-0-2020-27783)
Vulnerability from cvelistv5 – Published: 2020-12-03 16:39 – Updated: 2025-12-17 21:02
VLAI?
Summary
A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.
Severity ?
6.1 (Medium)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1901633 | x_refsource_MISC |
| https://www.debian.org/security/2020/dsa-4810 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.oracle.com//security-alerts/cpujul2021.html | x_refsource_MISC |
| https://advisory.checkmarx.net/advisory/CX-2020-4286 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021052… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | python-lxml |
Affected:
lxml-4.6.2
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T16:25:42.427Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901633"
},
{
"name": "DSA-4810",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "https://www.debian.org/security/2020/dsa-4810"
},
{
"name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2467-2] lxml regression update",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html"
},
{
"name": "FEDORA-2020-0e055ea503",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/"
},
{
"name": "FEDORA-2020-307946cfb6",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://advisory.checkmarx.net/advisory/CX-2020-4286"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20210521-0003/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2020-27783",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-12-17T21:02:01.991144Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-12-17T21:02:06.822Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "python-lxml",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "lxml-4.6.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-07-20T22:54:48.000Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901633"
},
{
"name": "DSA-4810",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "https://www.debian.org/security/2020/dsa-4810"
},
{
"name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2467-2] lxml regression update",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html"
},
{
"name": "FEDORA-2020-0e055ea503",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/"
},
{
"name": "FEDORA-2020-307946cfb6",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://advisory.checkmarx.net/advisory/CX-2020-4286"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://security.netapp.com/advisory/ntap-20210521-0003/"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2020-27783",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "python-lxml",
"version": {
"version_data": [
{
"version_value": "lxml-4.6.2"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-79"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1901633",
"refsource": "MISC",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901633"
},
{
"name": "DSA-4810",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2020/dsa-4810"
},
{
"name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2467-2] lxml regression update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html"
},
{
"name": "FEDORA-2020-0e055ea503",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/"
},
{
"name": "FEDORA-2020-307946cfb6",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/"
},
{
"name": "https://www.oracle.com//security-alerts/cpujul2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"name": "https://advisory.checkmarx.net/advisory/CX-2020-4286",
"refsource": "MISC",
"url": "https://advisory.checkmarx.net/advisory/CX-2020-4286"
},
{
"name": "https://security.netapp.com/advisory/ntap-20210521-0003/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20210521-0003/"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2020-27783",
"datePublished": "2020-12-03T16:39:41.000Z",
"dateReserved": "2020-10-27T00:00:00.000Z",
"dateUpdated": "2025-12-17T21:02:06.822Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-27783",
"date": "2026-05-19",
"epss": "0.01246",
"percentile": "0.79507"
},
"fkie_nvd": {
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:lxml:lxml:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"1.2\", \"versionEndExcluding\": \"4.6.2\", \"matchCriteriaId\": \"E38D76A8-089A-4CE3-93FA-97F5E30D9C18\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"749804DA-4B27-492A-9ABA-6BB562A6B3AC\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"F4CFF558-3C47-480D-A2F0-BABF26042943\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"DEECE5FC-CACF-4496-A3E7-164736409252\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"36D96259-24BD-44E2-96D9-78CE1D41F956\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"BDFB1169-41A0-4A86-8E4F-FDA9730B1E94\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"49ACFC73-A509-4D1C-8FC3-F68F495AB055\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"D3E503FB-6279-4D4A-91D8-E237ECF9D2B0\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.\"}, {\"lang\": \"es\", \"value\": \"Se detect\\u00f3 una vulnerabilidad de tipo XSS en el m\\u00f3dulo de limpieza de python-lxml. El analizador del m\\u00f3dulo no imitaba apropiadamente los navegadores, lo que causaba comportamientos diferentes entre el sanitizador y la p\\u00e1gina del usuario. Un atacante remoto podr\\u00eda explotar este fallo para ejecutar c\\u00f3digo HTML/JS arbitrario\"}]",
"id": "CVE-2020-27783",
"lastModified": "2024-11-21T05:21:49.663",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\", \"baseScore\": 6.1, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 2.7}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:N/I:P/A:N\", \"baseScore\": 4.3, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
"published": "2020-12-03T17:15:13.177",
"references": "[{\"url\": \"https://advisory.checkmarx.net/advisory/CX-2020-4286\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Exploit\", \"Issue Tracking\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210521-0003/\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2020/dsa-4810\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://advisory.checkmarx.net/advisory/CX-2020-4286\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Issue Tracking\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210521-0003/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2020/dsa-4810\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}]",
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-79\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-79\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2020-27783\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2020-12-03T17:15:13.177\",\"lastModified\":\"2025-12-17T21:15:52.560\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.\"},{\"lang\":\"es\",\"value\":\"Se detect\u00f3 una vulnerabilidad de tipo XSS en el m\u00f3dulo de limpieza de python-lxml. El analizador del m\u00f3dulo no imitaba apropiadamente los navegadores, lo que causaba comportamientos diferentes entre el sanitizador y la p\u00e1gina del usuario. Un atacante remoto podr\u00eda explotar este fallo para ejecutar c\u00f3digo HTML/JS arbitrario\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:P/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lxml:lxml:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.2\",\"versionEndExcluding\":\"4.6.2\",\"matchCriteriaId\":\"E38D76A8-089A-4CE3-93FA-97F5E30D9C18\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"749804DA-4B27-492A-9ABA-6BB562A6B3AC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4CFF558-3C47-480D-A2F0-BABF26042943\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"36D96259-24BD-44E2-96D9-78CE1D41F956\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BDFB1169-41A0-4A86-8E4F-FDA9730B1E94\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"49ACFC73-A509-4D1C-8FC3-F68F495AB055\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3E503FB-6279-4D4A-91D8-E237ECF9D2B0\"}]}]}],\"references\":[{\"url\":\"https://advisory.checkmarx.net/advisory/CX-2020-4286\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20210521-0003/\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4810\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com//security-alerts/cpujul2021.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://advisory.checkmarx.net/advisory/CX-2020-4286\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20210521-0003/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4810\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com//security-alerts/cpujul2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://www.debian.org/security/2020/dsa-4810\", \"name\": \"DSA-4810\", \"tags\": [\"vendor-advisory\", \"x_refsource_DEBIAN\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\", \"name\": \"[debian-lts-announce] 20201218 [SECURITY] [DLA 2467-2] lxml regression update\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\", \"name\": \"FEDORA-2020-0e055ea503\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\", \"name\": \"FEDORA-2020-307946cfb6\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://advisory.checkmarx.net/advisory/CX-2020-4286\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210521-0003/\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T16:25:42.427Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 6.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2020-27783\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-12-17T21:02:01.991144Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-12-17T21:01:54.696Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"python-lxml\", \"versions\": [{\"status\": \"affected\", \"version\": \"lxml-4.6.2\"}]}], \"references\": [{\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://www.debian.org/security/2020/dsa-4810\", \"name\": \"DSA-4810\", \"tags\": [\"vendor-advisory\", \"x_refsource_DEBIAN\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\", \"name\": \"[debian-lts-announce] 20201218 [SECURITY] [DLA 2467-2] lxml regression update\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\", \"name\": \"FEDORA-2020-0e055ea503\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\", \"name\": \"FEDORA-2020-307946cfb6\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://advisory.checkmarx.net/advisory/CX-2020-4286\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210521-0003/\", \"tags\": [\"x_refsource_CONFIRM\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2021-07-20T22:54:48.000Z\"}, \"x_legacyV4Record\": {\"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"lxml-4.6.2\"}]}, \"product_name\": \"python-lxml\"}]}, \"vendor_name\": \"n/a\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\", \"name\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1901633\", \"refsource\": \"MISC\"}, {\"url\": \"https://www.debian.org/security/2020/dsa-4810\", \"name\": \"DSA-4810\", \"refsource\": \"DEBIAN\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html\", \"name\": \"[debian-lts-announce] 20201218 [SECURITY] [DLA 2467-2] lxml regression update\", \"refsource\": \"MLIST\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/\", \"name\": \"FEDORA-2020-0e055ea503\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/\", \"name\": \"FEDORA-2020-307946cfb6\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"name\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://advisory.checkmarx.net/advisory/CX-2020-4286\", \"name\": \"https://advisory.checkmarx.net/advisory/CX-2020-4286\", \"refsource\": \"MISC\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210521-0003/\", \"name\": \"https://security.netapp.com/advisory/ntap-20210521-0003/\", \"refsource\": \"CONFIRM\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"A XSS vulnerability was discovered in python-lxml\u0027s clean module. The module\u0027s parser didn\u0027t properly imitate browsers, which caused different behaviors between the sanitizer and the user\u0027s page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-79\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2020-27783\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"secalert@redhat.com\"}}}}",
"cveMetadata": "{\"cveId\": \"CVE-2020-27783\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-17T21:02:06.822Z\", \"dateReserved\": \"2020-10-27T00:00:00.000Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2020-12-03T16:39:41.000Z\", \"assignerShortName\": \"redhat\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…