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VULNERABILITIES

CVE-2026-74860 Details

Description

A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:64463 [email protected]
https://access.redhat.com/errata/RHSA-2026:71585 [email protected]
https://access.redhat.com/errata/RHSA-2026:71586 [email protected]
https://access.redhat.com/errata/RHSA-2026:71641 [email protected]
https://access.redhat.com/security/cve/CVE-2026-74860 [email protected]

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-763Release of Invalid Pointer or Reference[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-74860
NVD Published Date:
Sep 8, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-74860 Details - Not Deferred