Vulnerability in Mistune_project Mistune
CVE-2022-34749
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.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
EPSS: 0.012 (64.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mistune_project Mistune
- Fedoraproject Fedora — versions 37
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (vendor-advisory)
Frequently asked questions
- What is CVE-2022-34749?
- CVE-2022-34749 is a high-severity vulnerability in Mistune_project Mistune, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2022-07-25.
- How severe is CVE-2022-34749?
- High severity. CVSS v3 base score is 7.5 out of 10.