GHSA-rcv9-qm8p-9p6j
Hugging Face Transformers library has Regular Expression Denial of Service
At a glance
- Published
- Updated
- CVE
- CVE-2025-6051
- Aliases
- PYSEC-2026-1988
- CVSS_V3
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the `normalize_numbers()` method of the `EnglishNormalizer` class. This vulnerability affects versions up to 4.52.4 and is fixed in version 4.53.0. The issue arises from the method's handling of numeric strings, which can be exploited using crafted input strings containing long sequences of digits, leading to excessive CPU consumption. This vulnerability impacts text-to-speech and number normalization tasks, potentially causing service disruption, resource exhaustion, and API vulnerabilities.
Affected packages
| Package | Versions |
|---|---|
| PyPI · transformers | introduced 0, fixed 4.53.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-6051 ADVISORY
- https://github.com/huggingface/transformers/pull/38844 WEB
- https://github.com/huggingface/transformers/commit/54a02160eb030da9be18231c77791f2eb3a52216 WEB
- https://github.com/huggingface/transformers/commit/ba8eaba9865618253f997784aa565b96206426f0 WEB
- https://github.com/huggingface/transformers PACKAGE
- https://huntr.com/bounties/af929523-7b59-418a-bf55-301830b2ac9d WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |