CVE-2025-6497

low

Published 2025-06-23 · Modified 2026-04-29

CVSS v3

3.3

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v2

1.7

VIR risk

3.3

Description

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.

Predictions

Exploit likelihood

34%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2025-6497

OS impact

OS	Version	Status
debian	bookworm	affected
debian	bullseye	affected
debian	forky	affected
debian	sid	affected
debian	trixie	affected

References

https://github.com/htacg/tidy-html5/issues/1142
https://github.com/user-attachments/files/19825297/tidy-html5_crash_2.txt
https://vuldb.com/?ctiid.313613
https://vuldb.com/?id.313613
https://vuldb.com/?submit.601008
https://security-tracker.debian.org/tracker/CVE-2025-6497

CWEs

CWE-617

Verify integrity in audit chain (admin only). AS-IS.