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Security Advisories

CVE-2024-21503

NVD

https://nvd.nist.gov/vuln/detail/CVE-2024-21503

Severity

5.3

Medium

CVSS V3

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Description

Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in the strings.py file. An attacker could exploit this vulnerability by crafting a malicious input that causes a denial of service.

Exploiting this vulnerability is possible when running Black on untrusted input, or if you habitually put thousands of leading tab characters in your docstrings.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2024-21503
  • https://github.com/advisories/GHSA-fj7x-q9j7-g6q6
  • https://github.com/psf/black/releases/tag/24.3.0
  • https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273
  • https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8

Affected packages

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