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  5. CVE-2023-26303

CVE-2023-26303: markdown-it-py Denial of Service vulnerability

February 23, 2023 (updated September 30, 2024)

Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.

References

  • github.com/advisories/GHSA-vrjv-mxr7-vjf8
  • github.com/executablebooks/markdown-it-py
  • github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c
  • github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49
  • github.com/executablebooks/markdown-it-py/pull/246
  • github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-24.yaml
  • nvd.nist.gov/vuln/detail/CVE-2023-26303

Code Behaviors & Features

Detect and mitigate CVE-2023-26303 with GitLab Dependency Scanning

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Affected versions

All versions before 2.2.0

Fixed versions

  • 2.2.0

Solution

Upgrade to version 2.2.0 or above.

Impact 5.5 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-173: Improper Handling of Alternate Encoding

Source file

pypi/markdown-it-py/CVE-2023-26303.yml

Spotted a mistake? Edit the file on GitLab.

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