Description
A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown function of the file src/commonmark-rules.js. Performing manipulation results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be exploited.
References (5)
Core 5
Core References
Permissions Required, VDB Entry vdb-entry
https://vuldb.com/?id.321880
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.321880
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.637911
Issue Tracking issue-tracking
https://github.com/mixmark-io/turndown/issues/501
Issue Tracking exploit
issue-tracking
https://github.com/mixmark-io/turndown/issues/501#issue-3336342088
Scores
CVSS v3
5.3
EPSS
0.0046
EPSS Percentile
36.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
CWE-400
Status
published
Products (2)
mixmark-io/turndown
7.2.0
mixmark-io/turndown
7.2.1
Published
Aug 29, 2025
Tracked Since
Feb 18, 2026