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Vulnerabilities

Vulnerability · CVE-2025-2099

A vulnerability in the function of the module in huggingface/transformers version v4.48.3 allows for a Regular Expression Denial of Service (ReDoS) attack.

Published May 19, 2025 · catalog updated May 19, 2025 · A vulnerability in the

Check this week

CVE-2025-2099 is not in CISA KEV. FIRST estimates a 61.00% chance of exploitation in the next 30 days. Check whether you run A vulnerability in the.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A vulnerability in the).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
61.00%
Remediation
Version ranges on file
Affected products
vendor huggingface huggingface/transformers unspecified <4.50.0

A vulnerability in the function of the 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor huggingface huggingface/transformers unspecified <4.50.0unspecified <4.50.0

How to fix CVE-2025-2099

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-2099 is not in CISA KEV. FIRST estimates a 61.00% chance of exploitation in the next 30 days. Check whether you run A vulnerability in the.

Which versions are affected?

Compare what you have installed with huggingface huggingface/transformers unspecified <4.50.0 unspecified <4.50.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 61.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 19, 2025 · EUVD

    Detected

    A vulnerability in the function of the 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 speci

  2. May 19, 2025 · EUVD

    Updated

    A vulnerability in the function of the 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 speci

Sources

  • CVE.orgVulnerability recordCVE-2025-2099

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-15691

    A vulnerability in the function of the 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 backtra

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog May 19, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.