This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-102633 →

DEBIAN-CVE-2026-102633

libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocat...

Original description

The description as published by the source.

libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial of service.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 expat

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

Debian:13 expat

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.0-1~deb13u1"}]}]

Debian:14 expat

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.5-2"}]}]

References

advisory security-tracker.debian.org