medium5.3
CVE-2024-21503
Black vulnerable to Regular Expression Denial of Service (ReDoS)
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | black | >= 0, < 24.3.0 | 24.3.0 |
Affected products
| Product | Affected versions |
|---|---|
| Package Black | before 24.3.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8
- https://github.com/psf/black/releases/tag/24.3.0
- https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273
- https://github.com/advisories/GHSA-fj7x-q9j7-g6q6
- https://nvd.nist.gov/vuln/detail/CVE-2024-21503
- https://github.com/pypa/advisory-database/tree/main/vulns/black/PYSEC-2024-48.yaml