GHSA-37mw-44qp-f5jm
Transformers is vulnerable to ReDoS attack through its DonutProcessor class
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | transformers | < 4.52.1 | 4.52.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the DonutProcessor class's `token2json()` method. This vulnerability affects versions 4.51.3 and earlier, and is fixed in version 4.52.1. The issue arises from the regex pattern `<s_(.*?)>` which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to service disruption, resource exhaustion, and potential API service vulnerabilities, impacting document processing tasks using the Donut model.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2025-3933
- https://github.com/huggingface/transformers/pull/37788
- https://github.com/huggingface/transformers/commit/ebbe9b12dd75b69f92100d684c47f923ee262a93
- https://github.com/huggingface/transformers
- https://huntr.com/bounties/25282953-5827-4384-bb6f-5790d275721b