CVE-2025-6498

Name: CVE-2025-6498
Creator: NVD / NIST
Published: 2025-06-23T02:15:20.703+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.9/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2025-6498 is a low-severity vulnerability rated 1.9/10 on the CVSS scale. 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. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

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

CVSS 4.0

1.9/10

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.19%

9.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Htacg	Tidy	5.8.0

References

https://github.com/htacg/tidy-html5/issues/1152Exploit, Issue Tracking
https://github.com/user-attachments/files/20438303/tidy-html5_crash_3.txtExploit
https://vuldb.com/?ctiid.313614Permissions Required, VDB Entry
https://vuldb.com/?id.313614Third Party Advisory, VDB Entry
https://vuldb.com/?submit.601009Third Party Advisory, VDB Entry
https://github.com/htacg/tidy-html5/issues/1152Exploit, Issue Tracking

Timeline

Published: Jun 23, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-6498?

How severe is CVE-2025-6498?

CVE-2025-6498 has a CVSS score of 1.9/10 (LOW severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2025-6498?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-6498?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST