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Hugging Face Transformers vulnerable to Regular Expression Denial of Service (ReDoS) in the AdamWeightDecay optimizer
Hugging Face Transformers vulnerable to Regular Expression Denial of Service (ReDoS) in the AdamWeightDecay optimizer
Affected packages
- transformers— before 4.53.0
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2025-6921
- https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
- https://github.com/huggingface/transformers/commit/d37f7517972f67e3f2194c000ed0f87f064e5099
- https://github.com/huggingface/transformers
- https://huntr.com/bounties/287d15a7-6e7c-45d2-8c05-11e305776f1f
Structured record: https://osv.dev/vulnerability/GHSA-4w7r-h757-3r74
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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