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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWpyOXAtcjQyMy05bTJy
markdown2 Regular Expression Denial of Service
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.
Permalink: https://github.com/advisories/GHSA-jr9p-r423-9m2rJSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWpyOXAtcjQyMy05bTJy
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: almost 3 years ago
Updated: 8 months ago
CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Identifiers: GHSA-jr9p-r423-9m2r, CVE-2021-26813
References:
- https://nvd.nist.gov/vuln/detail/CVE-2021-26813
- https://github.com/trentm/python-markdown2/pull/387
- https://lists.fedoraproject.org/archives/list/[email protected]/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY/
- https://github.com/advisories/GHSA-jr9p-r423-9m2r
Blast Radius: 27.0
Affected Packages
pypi:markdown2
Dependent packages: 102Dependent repositories: 4,032
Downloads: 2,225,372 last month
Affected Version Ranges: >= 1.0.1.18, < 2.4.0
Fixed in: 2.4.0
All affected versions: 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.3.1, 1.4.0, 1.4.1, 1.4.2, 2.0.0, 2.0.1, 2.1.0, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8, 2.3.9, 2.3.10
All unaffected versions: 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.4.10, 2.4.11, 2.4.12, 2.4.13