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CVE-2026-24515

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Date: January 23, 2026

In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.

Severity Score

Related Resources (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-24515
https://github.com/libexpat/libexpat/pull/1131
https://www.mend.io/vulnerability-database/CVE-2026-24515

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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