CVE-2025-6497

1.9 lowEPSS 0.2%

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.

Severity

CVSS 4.0

1.9 low

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

3.3 low

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
CWE: CWE-617
Published: 2025-06-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

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

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