This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-76781 →

DEBIAN-CVE-2026-76781

A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML c...

Original description

The description as published by the source.

A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing. This occurs when a nextCatalog element lacks its mandatory catalog attribute, leading to the application crashing and causing a Denial of Service (DoS).

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libxml2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 libxml2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 libxml2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.15.4+dfsg-1"}]}]

References

advisory security-tracker.debian.org