Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Description
A Regular Expression Denial of Service (ReDoS) vulnerability was identified in the huggingface/transformers library, specifically in the file tokenization_gpt_neox_japanese.py of the GPT-NeoX-Japanese model. The vulnerability occurs in the SubWordJapaneseTokenizer class, where regular expressions process specially crafted inputs. The issue stems from a regex exhibiting exponential complexity under certain conditions, leading to excessive backtracking. This can result in high CPU usage and potential application downtime, effectively creating a Denial of Service (DoS) scenario. The affected version is v4.48.1 (latest).
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
transformersPyPI | < 4.50.0 | 4.50.0 |
Affected products
4- osv-coords3 versionspkg:apk/chainguard/nemopkg:apk/chainguard/tritonserver-backend-tensorrtllm-24.04pkg:pypi/transformers
< 2.5.2-r2+ 2 more
- (no CPE)range: < 2.5.2-r2
- (no CPE)range: < 0.9.0-r5
- (no CPE)range: < 4.50.0
- huggingface/huggingface/transformersv5Range: unspecified
Patches
Vulnerability mechanics
References
4News mentions
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