CVE-2025-5197: 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 0.4%
A Regular Expression Denial of Service (ReDoS) vulnerability exists in the Hugging Face Transformers library, specifically in the `convert_tf_weight_name_to_pt_weight_name()` function. This function, responsible for converting TensorFlow weight names to PyTorch format, uses a regex pattern `/[^/]*___([^/]*)/` that can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. The vulnerability affects versions up to 4.51.3 and is fixed in version 4.53.0. This issue can lead to service disruption, resource exhaustion, and potential API service vulnerabilities, impacting model conversion processes between TensorFlow and PyTorch formats.
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-2025-2099MEDIUMRegular Expression Denial of Service (ReDoS) in huggingface/transformersEPSS 0.6%