A vulnerability in the HuggingFace Transformers library, specifically in the `Trainer` class, allows for arbitrary code execution. The `_load_rng_state()` method in `src/transformers/trainer.py` at line 3059 calls `torch.load()` without the `weights_only=True` parameter. This issue affects all versions of the library supporting `torch>=2.2` when used with PyTorch versions below 2.6, as the `safe_globals()` context manager provides no protection in these versions. An attacker can exploit this vulnerability by supplying a malicious checkpoint file, such as `rng_state.pth`, which can execute arbitrary code when loaded. The issue is resolved in version v5.0.0rc3.
References
| Link | Resource |
|---|---|
| https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396 | Patch |
| https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485 | Exploit Third Party Advisory |
| https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485 | Exploit Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
28 Apr 2026, 16:39
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:huggingface:transformers:5.0.0:rc0:*:*:*:*:*:* cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:* cpe:2.3:a:huggingface:transformers:5.0.0:rc2:*:*:*:*:*:* cpe:2.3:a:huggingface:transformers:5.0.0:rc1:*:*:*:*:*:* |
|
| References | () https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396 - Patch | |
| References | () https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485 - Exploit, Third Party Advisory | |
| First Time |
Huggingface
Huggingface transformers |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
07 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485 - |
07 Apr 2026, 06:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-07 06:16
Updated : 2026-04-28 16:39
NVD link : CVE-2026-1839
Mitre link : CVE-2026-1839
CVE.ORG link : CVE-2026-1839
JSON object : View
Products Affected
huggingface
- transformers
CWE
CWE-502
Deserialization of Untrusted Data
