PYSEC-2026-1979
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/transformers/PYSEC-2026-1979.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-1979
- Aliases
- Published
- 2026-07-07T16:02:56.726858Z
- Modified
- 2026-07-07T17:48:13.616945161Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- Transformers vulnerable to ReDoS attack through its SETTING_RE variable
- Details
-
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the huggingface/transformers repository, specifically in version 4.49.0. The vulnerability is due to inefficient regular expression complexity in the
SETTING_REvariable within thetransformers/commands/chat.pyfile. The regex contains repetition groups and non-optimized quantifiers, leading to exponential backtracking when processing 'almost matching' payloads. This can degrade application performance and potentially result in a denial-of-service (DoS) when handling specially crafted input strings. The issue is fixed in version 4.51.0. - References
-
- https://nvd.nist.gov/vuln/detail/CVE-2025-3262
- https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
- https://github.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca
- https://github.com/huggingface/transformers
- https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184
- https://pypi.org/project/transformers
- https://github.com/advisories/GHSA-489j-g2vx-39wf
Affected packages
PyPI / transformers
Package
- Name
- transformers
- View open source insights on deps.dev
- Purl
- pkg:pypi/transformers