Hi,

The following vulnerability was published for expat.

CVE-2026-76957[0]:
| libexpat before 2.8.4 lacks handler call depth tracking with custom
| encoding callbacks. Thus, a use-after-free can occur. NOTE: this is
| similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-76957
https://www.cve.org/CVERecord?id=CVE-2026-76957
[1] https://github.com/libexpat/libexpat/pull/1322

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore