Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1mdzN2LXg0ZjItdjY3M84AAtnx

Mistune vulnerable to catastrophic backtracking

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.

Permalink: https://github.com/advisories/GHSA-fw3v-x4f2-v673
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1mdzN2LXg0ZjItdjY3M84AAtnx
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: almost 2 years ago
Updated: 9 months ago

CVSS Score: 8.6
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Identifiers: GHSA-fw3v-x4f2-v673, CVE-2022-34749
References:

• https://nvd.nist.gov/vuln/detail/CVE-2022-34749
• https://github.com/lepture/mistune/commit/a6d43215132fe4f3d93f8d7e90ba83b16a0838b2
• https://github.com/lepture/mistune/releases
• https://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2022-237.yaml
• https://github.com/lepture/mistune/issues/314#issuecomment-1223972386
• https://github.com/lepture/mistune/commit/ca1e7b506850f4e488823fc7338b49a8f9852718
• https://github.com/pypa/advisory-database/blob/main/vulns/mistune/PYSEC-2022-237.yaml
• https://lists.fedoraproject.org/archives/list/[email protected]/message/TQHXITQ2DSBYOILKHXBSBB7PFBPZHF63/
• https://github.com/advisories/GHSA-fw3v-x4f2-v673

Repository: https://github.com/lepture/mistune
Blast Radius: 41.3

Affected Packages