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CVE-2025-3933

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

Published: Jul 11, 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 within the DonutProcessor class's `token2json()` method. This vulnerability affects versions 4.50.3 and earlier, and is fixed in version 4.52.1. The issue arises from the regex pattern `<s_(.*?)>` which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to service disruption, resource exhaustion, and potential API service vulnerabilities, impacting document processing tasks using the Donut model.

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

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/25282953-5827-4384-bb6f-5790d275721b
huntr.com
https://github.com/huggingface/transformers/commit/ebbe9b12dd75b69f92100d684c47f923ee262a93
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-3933
nvd.nist.gov
and 3 more references View all →

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