CVE-2022-34749
High
Published: 25 July 2022
Published
25 July 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0052
67.2th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2022-34749 is a high-severity Inefficient Regular Expression Complexity (CWE-1333) vulnerability in Mistune Project Mistune. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 32.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-0155
Vulnerability details
In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
mistune project
mistune
≤ 2.0.2
fedoraproject
fedora
37
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.