CVE-2025-6492: MarkText index.js getRecommendTitleFromMarkdownString redos

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-22 · updated 2026-06-17
Weakness: CWE-400

Description

A vulnerability has been found in MarkText up to 0.17.1 and classified as problematic. Affected by this vulnerability is the function getRecommendTitleFromMarkdownString of the file marktext/src/main/utils/index.js. The manipulation leads to inefficient regular expression complexity. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Affected products

MarkText: 0.17.0, 0.17.1

References

https://github.com/marktext/marktext/pull/3952
https://github.com/mmmsssttt404/marktext/blob/c59b3ad423dfa082869933baf9f5d5c69bdcc560/test/unit/specs/match-electron-accelerator.spec.js#L155-L164
https://vuldb.com/?ctiid.313609
https://vuldb.com/?id.313609
https://vuldb.com/?submit.598208

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