CVE-2022-21681
HIGHmarked < 4.0.10 - Denial of Service via Catastrophic Backtracking in ReflinkSearch Regex
Title source: llmDescription
Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `inline.reflinkSearch` may cause catastrophic backtracking against some strings and lead to a denial of service (DoS). Anyone who runs untrusted markdown through a vulnerable version of marked and does not use a worker with a time limit may be affected. This issue is patched in version 4.0.10. As a workaround, avoid running untrusted markdown through marked or run marked on a worker thread and set a reasonable time limit to prevent draining resources.
References (3)
Core 3
Core References
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AIXDMC3CSHYW3YWVSQOXAWLUYQHAO5UX/
Patch, Third Party Advisory
https://github.com/markedjs/marked/commit/8f806573a3f6c6b7a39b8cdb66ab5ebb8d55a5f5
Exploit, Third Party Advisory
https://github.com/markedjs/marked/security/advisories/GHSA-5v2h-r2cx-5xgj
Scores
CVSS v3
7.5
EPSS
0.0274
EPSS Percentile
84.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
CWE-400
Status
published
Products (3)
fedoraproject/fedora
36
marked_project/marked
< 4.0.10
npm/marked
0 - 4.0.10npm
Published
Jan 14, 2022
Tracked Since
Feb 18, 2026