CVE-2026-24515 Details
Description
In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
A vulnerability exists in libexpat versions prior to 2.7.4, where the function XML_ExternalEntityParserCreate fails to copy user data associated with unknown encoding handlers. This oversight could lead to improper handling of encoding, potentially causing issues in XML parsing or processing.
Users can upgrade to libexpat version 2.7.4 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert-portal.siemens.com/productcert/html/ssa-253495.html | siemens-SADP | |
| https://github.com/libexpat/libexpat/pull/1131 | [email protected] | Issue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| libexpat project libexpat | < 2.7.4 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | siemens-SADP |
| Jun 2, 2026 | CVE Modified | siemens-SADP |
| Feb 5, 2026 | Reanalysis | [email protected] |
| Jan 30, 2026 | Initial Analysis | [email protected] |
| Jan 23, 2026 | New CVE Received | [email protected] |