NULL pointer dereference in Htacg Tidy-Html5
CVE-2025-6496
A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability affects the function InsertNodeAsParent of the file src/parser.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
EPSS: 0.001 (3.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Htacg Tidy-html5 — versions 5.8.0
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking)
- cna@vuldb.com (exploit)
Frequently asked questions
- What is CVE-2025-6496?
- CVE-2025-6496 is a low-severity vulnerability in Htacg Tidy-Html5, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2025-06-23.
- How severe is CVE-2025-6496?
- Low severity. CVSS v3 base score is 3.3 out of 10.