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CVE-2025-3263

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

Published: Jul 7, 2025Updated: Aug 7, 2025 Sources: CVE List NVD GHSA BDUCWE-1333
5.3MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 64.5%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
Not available

Description

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_configuration_file()` function within the `transformers.configuration_utils` module. The affected version is 4.49.0, and the issue is resolved in version 4.51.0. The vulnerability arises from the use of a regular expression pattern `config\.(.*)\.json` that can be exploited to cause excessive CPU consumption through crafted input strings, leading to catastrophic backtracking. This can result in model serving disruption, resource exhaustion, and increased latency in applications using the library.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-1333

Affected Products

huggingface
commercialaka huggingface/transformers, smolagents, transformers
huggingface/transformersLibraryLibrary
AI / ML / ml-framework
transformersLibraryLibrary
AI / ML / ml-framework
Hugging Face, Inc.
commercialaka huggingface, transformers, smolagents
TransformersMixed
AI / ML / ml-framework
PyPI
package-ecosystem
transformers
OSS Libraries

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
huntr.com
https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
github.com
https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
github.com
and 3 more references View all →

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