GHSA-6rvg-6v2m-4j46
Transformers Regular Expression Denial of Service (ReDoS) vulnerability
At a glance
- Published
- Updated
- CVE
- CVE-2024-12720
- Aliases
- PYSEC-2026-1982
- 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 identified in the huggingface/transformers library, specifically in the file tokenization_nougat_fast.py. The vulnerability occurs in the post_process_single() function, where a regular expression processes specially crafted input. The issue stems from the regex exhibiting exponential time complexity under certain conditions, leading to excessive backtracking. This can result in significantly high CPU usage and potential application downtime, effectively creating a Denial of Service (DoS) scenario. The affected version is v4.46.3.
Affected packages
| Package | Versions |
|---|---|
| PyPI · transformers | introduced 0, fixed 4.48.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-12720 ADVISORY
- https://github.com/huggingface/transformers/commit/deac971c469bcbb182c2e52da0b82fb3bf54cccf WEB
- https://github.com/huggingface/transformers PACKAGE
- https://huntr.com/bounties/4bed1214-7835-4252-a853-22bbad891f98 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |