Bug 2374238 (CVE-2025-6493) - CVE-2025-6493 codemirror: CodeMirror Markdown Regex Complexity Vulnerability
Summary: CVE-2025-6493 codemirror: CodeMirror Markdown Regex Complexity Vulnerability
Keywords:
Status: NEW
Alias: CVE-2025-6493
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-06-22 23:01 UTC by OSIDB Bzimport
Modified: 2025-06-23 16:49 UTC (History)
48 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2025-06-22 23:01:06 UTC 
A vulnerability was found in CodeMirror up to 5.17.0 and classified as problematic. Affected by this issue is some unknown functionality of the file mode/markdown/markdown.js of the component Markdown Mode. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that "CodeMirror 6 exists, and is [...] much more actively maintained."
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