CVE-2025-2099: medium-severity vulnerability in huggingface/transformers
Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.6%
A vulnerability in the `preprocess_string()` function of the `transformers.testing_utils` module in huggingface/transformers version v4.48.3 allows for a Regular Expression Denial of Service (ReDoS) attack. The regular expression used to process code blocks in docstrings contains nested quantifiers, leading to exponential backtracking when processing input with a large number of newline characters. An attacker can exploit this by providing a specially crafted payload, causing high CPU usage and potential application downtime, effectively resulting in a Denial of Service (DoS) scenario.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
huggingface · huggingface/transformersRelated CVEs — huggingface/transformers
In the same product, most dangerous first.
CVE-2024-3568LOWArbitrary Code Execution via Deserialization in huggingface/transformersEPSS 2.1%CVE-2023-6730CRITICALDeserialization of Untrusted Data in huggingface/transformersEPSS 0.9%CVE-2024-12720MEDIUMRegular Expression Denial of Service (ReDoS) in huggingface/transformersEPSS 0.7%CVE-2023-7018CRITICALDeserialization of Untrusted Data in huggingface/transformersEPSS 0.7%CVE-2026-4372HIGHArbitrary Remote Code Execution via `_attn_implementation_internal` Config Injection in huggingface/transformersEPSS 0.7%CVE-2026-5241HIGHPolicy Bypass in LightGlue Nested Config Resolution in huggingface/transformersEPSS 0.6%