CVE-2026-96889: Librsvg: use-after-free when xml includes have duplicated entities

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-23 · updated 2026-10-21
Weakness: CWE-416

Description

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.

Affected products

Red Hat Enterprise Linux 10: all versions — fixed in 0:1.0.1-1.el10_2.2, 0:2.57.1-9.el10_2.10
Red Hat Enterprise Linux 7: all versions
Red Hat Enterprise Linux 8: all versions — fixed in 0:2.42.7-6.el8_10
Red Hat Enterprise Linux 9: all versions — fixed in 0:2.50.7-3.el9_8.1

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 0:1.0.1-1.el10_2.2, 0:2.57.1-9.el10_2.10; Red Hat Enterprise Linux 8 0:2.42.7-6.el8_10; Red Hat Enterprise Linux 9 0:2.50.7-3.el9_8.1. Check the vendor advisory for mitigations.

References

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