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.

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Deploy the Patch

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)
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