PT-2025-26574 · Htacg+1 · Tidy-Html5+1

Jjleo · Published 2025-06-23 · Updated 2025-06-23 · CVE-2025-6497

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions: HTACG tidy-html5 version 5.8.0

Description: A vulnerability was found in HTACG tidy-html5, affecting the function prvTidyParseNamespace of the file src/parser.c. The manipulation leads to a reachable assertion. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.

Recommendations: For HTACG tidy-html5 version 5.8.0, as a temporary workaround, consider disabling the prvTidyParseNamespace function until a patch is available. Restrict access to the src/parser.c file to minimize the risk of exploitation. Avoid using the affected function in local attacks until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

AZL-64317

AZL-64323

CVE-2025-6497

Affected Products

Debian

Tidy-Html5

References · 20

• 🔥❌ https://github.com/user-attachments/files/19825297/tidy-html5_crash_2.txt · Exploit, Deleted
• https://osv.dev/vulnerability/CVE-2025-6497 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-64323 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-6497 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-6497 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-64317 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-6497 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-6497 · Security Note
• https://ubuntu.com/security/CVE-2025-6497 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-6497 · Vendor Advisory
• https://github.com/htacg/tidy-html5/issues/1142 · Note
• https://t.me/cvetracker/26812 · Telegram Post
• https://twitter.com/CVEnew/status/1936956158012764321 · Twitter Post
• https://vuldb.com/?id.313613 · Note
• https://twitter.com/transilienceai/status/1937005975019389391 · Twitter Post