Inefficient Regular Expression Vulnerability in MarkText by MarkText
CVE-2025-6492

6.9MEDIUM

Key Information:

Vendor

MarkText

Status
Marktext
Vendor
CVE Published:
22 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6492?

A vulnerability has been identified in MarkText, specifically in the function getRecommendTitleFromMarkdownString within the index.js file. This issue arises from inefficient regular expression complexity that can be exploited remotely. The vulnerability was disclosed publicly, increasing the risk of attacks that manipulate this function, potentially leading to denial of service or other malicious outcomes. Users are encouraged to update to the latest versions to mitigate this risk.

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Affected Version(s)

MarkText 0.17.0

MarkText 0.17.1

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-2025-6492 - Proof of Concept

References

https://vuldb.com/?id.313609
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313609
signaturepermissions-required
https://vuldb.com/?submit.598208
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
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

mmmsssttt (VulDB User)
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