CVE-2025-6498

Public Exploit
HTACG tidy-html5 alloc.c defaultAlloc memory leak

Description

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.

Category

4.8
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Third-Party Advisory vuldb.com
Affected: HTACG tidy-html5
Published at:
Updated at:

References

Link Tags
https://vuldb.com/?id.313614 technical description vdb entry
https://vuldb.com/?ctiid.313614 permissions required signature
https://vuldb.com/?submit.601009 third party advisory
https://github.com/htacg/tidy-html5/issues/1152 issue tracking
https://github.com/user-attachments/files/20438303/tidy-html5_crash_3.txt exploit

Frequently Asked Questions

What is the severity of CVE-2025-6498?
CVE-2025-6498 has been scored as a medium severity vulnerability.
How to fix CVE-2025-6498?
To fix CVE-2025-6498, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-6498 being actively exploited in the wild?
It is possible that CVE-2025-6498 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-6498?
CVE-2025-6498 affects HTACG tidy-html5.
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