CVE-2025-3262: A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the huggingface/transformers repository,
Summary
A ReDoS vulnerability (regular expression denial of service, where inefficient pattern matching causes a system to slow down or crash) was found in the Hugging Face Transformers library version 4.49.0. The problem is in a regex pattern called `SETTING_RE` that uses inefficient repetition, causing it to take exponentially longer when processing specially crafted input strings, which can make the application unresponsive or crash.
Solution / Mitigation
Update to version 4.51.0 or later, where the issue is fixed.
Vulnerability Details
7.5(high)
EPSS: 0.1%
Classification
Taxonomy References
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-3262
First tracked: February 15, 2026 at 08:44 PM
Classified by LLM (prompt v3) · confidence: 95%