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CVE-2025-6493

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CVE-2025-6493

Published: Jun 22, 2025

Modified: Sep 29, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

A weakness has been identified in CodeMirror up to 5.65.20. Affected is an unknown function of the file mode/markdown/markdown.js of the component Markdown Mode. This manipulation causes inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited. Upgrading to version 6.0 is able to address this issue. You should upgrade the affected component. 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."

VendorProductVersions

n/a

CodeMirror

affected
5.65.0
affected
5.65.1
affected
5.65.2
affected
5.65.3
affected
5.65.4

+17 more versions

Weaknesses (CWE)

CWE-1333
CWE-400

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

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