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Vulnerabilities

Vulnerability · CVE-2026-4372

A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0.

Published May 24, 2026 · catalog updated Jul 23, 2026 · A critical remote code

Check if you run it

No confirmed exploitation is on record for CVE-2026-4372. EPSS is 0.60%. Act only if a listed version of A critical remote code is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A critical remote code).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.60%
Remediation
Advisory link
Affected products
cpe huggingface/transformers

A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0. The vulnerability allows an attacker to craft a malicious file containing the field set to an attacker-controlled HuggingFace Hub repository ID. When a victim loads this model using the standard API, the library downloads and executes arbitrary Python code from the attacker's repository with the victim's full OS privileges. This issue arises due to unfiltered deserialization of configuration attributes, insufficient sanitization of internal fields, and unsandboxed execution of downloaded kernels. The vulnerability bypasses the security mechanism, is invisible to the victim, and exploits the standard documented usage pattern, making it particularly severe. Users are advised to upgrade to version 5.3.0 or later to mitigate this issue.

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.

  • cpe huggingface/transformersversion unspecified

How to fix CVE-2026-4372

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2026-4372. EPSS is 0.60%. Act only if a listed version of A critical remote code is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1066; CWE-502: Deserialization of Untrusted Data. EPSS 0.60%. 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 24, 2026 · NIST NVD

    Detected

    A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0. The vulnerability allows an attacker to craft a malicious file containing the field set to an attacker-controlled HuggingFace Hub repository ID. When a victim loads this model using the standard API, the library downloads and executes arbitrary Python code from the

  2. Jul 23, 2026 · NIST NVD

    Updated

    A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0. The vulnerability allows an attacker to craft a malicious file containing the field set to an attacker-controlled HuggingFace Hub repository ID. When a victim loads this model using the standard API, the library downloads and executes arbitrary Python code from the

Sources

  • CVE.orgVulnerability recordCVE-2026-4372

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-4372

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-4372

    A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0. The vulnerability allows an attacker to craft a malicious file containing the field set to an attack

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.