CVE-2025-3262

Public Exploit
Regular Expression Denial of Service (ReDoS) in huggingface/transformers

Description

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the huggingface/transformers repository, specifically in version 4.49.0. The vulnerability is due to inefficient regular expression complexity in the `SETTING_RE` variable within the `transformers/commands/chat.py` file. The regex contains repetition groups and non-optimized quantifiers, leading to exponential backtracking when processing 'almost matching' payloads. This can degrade application performance and potentially result in a denial-of-service (DoS) when handling specially crafted input strings. The issue is fixed in version 4.51.0.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
EPSS 0.04%
Affected: huggingface huggingface/transformers
Published at:
Updated at:

References

Link Tags
https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184
https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76

Frequently Asked Questions

What is the severity of CVE-2025-3262?
CVE-2025-3262 has been scored as a medium severity vulnerability.
How to fix CVE-2025-3262?
To fix CVE-2025-3262, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3262 being actively exploited in the wild?
It is possible that CVE-2025-3262 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3262?
CVE-2025-3262 affects huggingface huggingface/transformers.
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