CVE-2025-6498

1.9 lowEPSS 0.2%

Low (1.9) in htacg tidy. EPSS 0.2% chance of exploitation in the next 30 days.

A vulnerability classified as problematic has been found in HTACG tidy-html5 5.8.0. Affected is the function defaultAlloc of the file src/alloc.c. The manipulation leads to memory leak. It is possible to launch the attack on the local host. 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

5.5 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
CWEs: CWE-401, CWE-404
Published: 2025-06-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

htacg:tidy

References

https://github.com/htacg/tidy-html5/issues/1152
https://github.com/user-attachments/files/20438303/tidy-html5_crash_3.txt
https://vuldb.com/?ctiid.313614
https://vuldb.com/?id.313614
https://vuldb.com/?submit.601009

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