CVE-2025-6498 | THREATINT

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.

Es wurde eine problematische Schwachstelle in HTACG tidy-html5 5.8.0 entdeckt. Betroffen hiervon ist die Funktion defaultAlloc der Datei src/alloc.c. Durch Manipulation mit unbekannten Daten kann eine memory leak-Schwachstelle ausgenutzt werden. Der Angriff hat dabei lokal zu erfolgen. Der Exploit steht zur öffentlichen Verfügung.

Reserved 2025-06-22 | Published 2025-06-23 | Updated 2025-06-23 | Assigner VulDB

MEDIUM: 4.8CVSS: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

LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Memory Leak

Denial of Service

Product status

5.8.0

affected

Timeline

2025-06-22:	Advisory disclosed
2025-06-22:	VulDB entry created
2025-06-22:	VulDB entry last update

Credits

JJLeo (VulDB User) reporter

References

vuldb.com/?id.313614 (VDB-313614 | HTACG tidy-html5 alloc.c defaultAlloc memory leak) vdb-entry technical-description

vuldb.com/?ctiid.313614 (VDB-313614 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.601009 (Submit #601009 | htacg tidy-html5 tidy-html5 5.8.0 (commit d08ddc2) Memory Leak) third-party-advisory

github.com/htacg/tidy-html5/issues/1152 issue-tracking

github.com/...achments/files/20438303/tidy-html5_crash_3.txt exploit

cve.org (CVE-2025-6498)

nvd.nist.gov (CVE-2025-6498)

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