Hi,

The following vulnerability was published for tidy-html5.

CVE-2025-6497[0]:
| A vulnerability was found in HTACG tidy-html5 5.8.0. It has been
| rated as problematic. This issue affects the function
| prvTidyParseNamespace of the file src/parser.c. The manipulation
| leads to reachable assertion. Attacking locally is a requirement.
| The exploit has been disclosed to the public and may be used.


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-2025-6497
https://www.cve.org/CVERecord?id=CVE-2025-6497
[1] https://github.com/htacg/tidy-html5/issues/1142

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore