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Vulnerability from cleanstart
Published
2026-01-30 17:26
Modified
2026-01-29 18:58
Summary
issue was discovered in libexpat before 2
Details
Multiple security vulnerabilities affect the expat package. An issue was discovered in libexpat before 2. See references for individual vulnerability details.
Severity
9.8 (Critical)
References
{
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"ranges": [
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{
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],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the expat package. An issue was discovered in libexpat before 2. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-YT18139",
"modified": "2026-01-29T18:58:54Z",
"published": "2026-01-30T17:26:57.202658Z",
"references": [
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"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-YT18139.json"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2017-9233"
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"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2019-15903"
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"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2021-45960"
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"url": "https://osv.dev/vulnerability/CVE-2021-46143"
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"type": "WEB",
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"type": "WEB",
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2022-25235"
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{
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"url": "https://osv.dev/vulnerability/CVE-2022-25236"
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"url": "https://osv.dev/vulnerability/CVE-2022-25314"
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"url": "https://osv.dev/vulnerability/CVE-2022-25315"
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"url": "https://osv.dev/vulnerability/CVE-2022-43680"
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"url": "https://osv.dev/vulnerability/CVE-2023-52425"
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CVE-2017-9233 (GCVE-0-2017-9233)
Vulnerability from cvelistv5 – Published: 2017-07-25 20:00 – Updated: 2024-08-05 17:02
VLAI
EPSS
Summary
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://support.apple.com/HT208144 | x_refsource_CONFIRM |
| https://libexpat.github.io/doc/cve-2017-9233/ | x_refsource_CONFIRM |
| https://github.com/libexpat/libexpat/blob/master/… | x_refsource_CONFIRM |
| http://www.securitytracker.com/id/1039427 | vdb-entryx_refsource_SECTRACK |
| https://support.apple.com/HT208113 | x_refsource_CONFIRM |
| https://support.apple.com/HT208112 | x_refsource_CONFIRM |
| https://support.apple.com/HT208115 | x_refsource_CONFIRM |
| http://www.debian.org/security/2017/dsa-3898 | vendor-advisoryx_refsource_DEBIAN |
| http://www.securityfocus.com/bid/99276 | vdb-entryx_refsource_BID |
| http://www.openwall.com/lists/oss-security/2017/06/17/7 | mailing-listx_refsource_MLIST |
| https://support.f5.com/csp/article/K03244804 | x_refsource_CONFIRM |
| https://lists.apache.org/thread.html/rf4c02775860… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r58af02e294b… | mailing-listx_refsource_MLIST |
Date Public
2017-06-17 00:00
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CVE-2019-15903 (GCVE-0-2019-15903)
Vulnerability from cvelistv5 – Published: 2019-09-04 05:59 – Updated: 2025-05-30 19:27
VLAI
EPSS
Summary
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.
Severity
6.5 (Medium)
CWE
- n/a
Assigner
References
59 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/4132-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://seclists.org/bugtraq/2019/Sep/30 | mailing-listx_refsource_BUGTRAQ |
| https://usn.ubuntu.com/4132-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.debian.org/security/2019/dsa-4530 | vendor-advisoryx_refsource_DEBIAN |
| https://seclists.org/bugtraq/2019/Sep/37 | mailing-listx_refsource_BUGTRAQ |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
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CVE-2021-45960 (GCVE-0-2021-45960)
Vulnerability from cvelistv5 – Published: 2022-01-01 18:47 – Updated: 2025-05-05 16:45
VLAI
EPSS
Summary
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
Severity
8.8 (High)
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/issues/531 | x_refsource_MISC |
| https://github.com/libexpat/libexpat/pull/534 | x_refsource_MISC |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1217609 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2022012… | x_refsource_CONFIRM |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202209-24 | vendor-advisoryx_refsource_GENTOO |
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CVE-2021-46143 (GCVE-0-2021-46143)
Vulnerability from cvelistv5 – Published: 2022-01-06 03:48 – Updated: 2025-05-05 16:44
VLAI
EPSS
Summary
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.
Severity
8.1 (High)
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/issues/532 | x_refsource_MISC |
| https://github.com/libexpat/libexpat/pull/538 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
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| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202209-24 | vendor-advisoryx_refsource_GENTOO |
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CVE-2022-22822 (GCVE-0-2022-22822)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:57 – Updated: 2025-05-05 16:29
VLAI
EPSS
Summary
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2022-22823 (GCVE-0-2022-22823)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:57 – Updated: 2025-05-05 16:29
VLAI
EPSS
Summary
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
6 references
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|---|---|
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CVE-2022-22824 (GCVE-0-2022-22824)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:29
VLAI
EPSS
Summary
defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
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CVE-2022-22825 (GCVE-0-2022-22825)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:29
VLAI
EPSS
Summary
lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
8.8 (High)
CWE
- n/a
Assigner
References
6 references
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|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2022-22826 (GCVE-0-2022-22826)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:29
VLAI
EPSS
Summary
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
8.8 (High)
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
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CVE-2022-22827 (GCVE-0-2022-22827)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:28
VLAI
EPSS
Summary
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
8.8 (High)
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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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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