Memory Leak Vulnerability in HTACG Tidy-HTML5 Product
CVE-2025-6498

4.8MEDIUM

Key Information:

Vendor

Htacg

Status
Tidy-html5
Vendor
CVE Published:
23 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6498?

A vulnerability has been identified in HTACG Tidy-HTML5 version 5.8.0, specifically within the defaultAlloc function located in src/alloc.c. This issue leads to a memory leak that can compromise application performance. Local attackers can exploit this weakness, which has been made publicly known and needs to be addressed to prevent potential system instability.

Affected Version(s)

tidy-html5 5.8.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-6498 - Proof of Concept

References

https://vuldb.com/?id.313614
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313614
signaturepermissions-required
https://vuldb.com/?submit.601009
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

JJLeo (VulDB User)
.
CVE-2025-6498 : Memory Leak Vulnerability in HTACG Tidy-HTML5 Product