Transformers Deserialization of Untrusted Data vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

3.4 · CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L

EPSS

• CVE-2024-3568: 2.08% estimated exploitation activity in the next 30 days; percentile 81.58 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

The huggingface/transformers library is vulnerable to arbitrary code execution through deserialization of untrusted data within the loadrepocheckpoint() function of the TFPreTrainedModel() class. Attackers can execute arbitrary code and commands by crafting a malicious serialized payload, exploiting the use of pickle.load() on data from potentially untrusted sources. This vulnerability allows for remote code execution (RCE) by deceiving victims into loading a seemingly harmless checkpoint during a normal training process, thereby enabling attackers to execute arbitrary code on the targeted machine.

Published by the source

10 Apr 2024, 18:30 UTC

Last modified by the source

7 Jul 2026, 17:57 UTC

Source last checked

26 Oct 2026, 13:13 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-37q5-v5qm-c9v8

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-37q5-v5qm-c9v8

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# Patch Next advisory brief: CVE-2024-3568

Advisory: Transformers Deserialization of Untrusted Data vulnerability
IDs: CVE-2024-3568, GHSA-37q5-v5qm-c9v8
Record: https://patchnext.com/advisories/cve-2024-3568 (revision 2, source checked 26 Oct 2026, 13:13 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.4)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: transformers 4.38.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI transformers: affected < 4.38.0; fixed in 4.38.0

## Suggested inspection (read-only)
- `python -m pip show transformers`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on transformers.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-37q5-v5qm-c9v8 (OSV record GHSA-37q5-v5qm-c9v8 lists affected ranges: PyPI transformers >=0 <4.38.0 (fixed))
- Verified: https://github.com/advisories/GHSA-37q5-v5qm-c9v8 (GitHub-reviewed advisory GHSA-37q5-v5qm-c9v8 lists affected ranges: PyPI transformers >=0 <4.38.0)

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