CVE-2026-1839

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Source
https://cve.org/CVERecord?id=CVE-2026-1839
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1839.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-1839
Aliases
Downstream
Related
Published
2026-04-07T05:22:00.959Z
Modified
2026-07-15T01:49:09.277072785Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H CVSS Calculator
Summary
Arbitrary Code Execution via Unsafe torch.load() in Trainer Checkpoint Loading in huggingface/transformers
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1839.json",
    "cna_assigner": "@huntr_ai"
}
References

Affected packages

Git / github.com/huggingface/transformers

Affected ranges

Type
GIT
Repo
https://github.com/huggingface/transformers
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
08810b1e278938278c50153ee1edfd7a20a759da
Introduced
cbc6716945cff1d8e124d344ba0150e6e27f8b6e
Fixed
03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
Database specific 
{
    "cpe": [
        "cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:huggingface:transformers:5.0.0:rc0:*:*:*:*:*:*",
        "cpe:2.3:a:huggingface:transformers:5.0.0:rc1:*:*:*:*:*:*",
        "cpe:2.3:a:huggingface:transformers:5.0.0:rc2:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.0.0"
        },
        {
            "introduced": "5.0.0-rc0"
        },
        {
            "last_affected": "5.0.0-rc0"
        },
        {
            "introduced": "5.0.0-rc1"
        },
        {
            "last_affected": "5.0.0-rc1"
        },
        {
            "introduced": "5.0.0-rc2"
        },
        {
            "last_affected": "5.0.0-rc2"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1.2
0.5.0
1.*
1.0
1.1.0
1.2.0
3.*
3.0.1
4.*
4.3.0.rc1
4.55.0-GLM-4.5V-preview
4.55.0-GLM-4.5V-preview-GLM-4.5V-preview
5.*
5.0.0-rc0
5.0.0-rc1
5.0.0-rc2
v0.*
v0.1.2
v0.2.0
v0.3.0
v0.4.0
v0.5.0
v0.5.1
v0.6.0
v0.6.1
v0.6.2
v2.*
v2.0.0
v2.1.0
v2.1.1
v2.10.0
v2.11.0
v2.2.0
v2.2.1
v2.2.2
v2.3.0
v2.4.0
v2.4.1
v2.5.0
v2.5.1
v2.6.0
v2.7.0
v2.8.0
v2.9.0
v2.9.1
v3.*
v3.0.0
v3.0.1
v3.0.2
v3.1.0
v3.2.0
v3.3.0
v3.3.1
v3.4.0
v3.5.0
v4.*
v4.1.0
v4.1.1
v4.10.0
v4.11.0
v4.12.0
v4.13.0
v4.14.0
v4.15.0
v4.16.0
v4.2.0
v4.3.0.rc1
v4.33.1
v4.4.0
v4.49.0-AyaVision
v4.49.0-Mistral-3
v4.49.0-SigLIP-2
v4.49.0-SmolVLM-2
v4.5.0
v4.50.3-DeepSeek-3
v4.51.3-BitNet-preview
v4.51.3-CSM-preview
v4.51.3-D-FINE-preview
v4.51.3-GraniteMoeHybrid-preview
v4.51.3-InternVL-preview
v4.51.3-Janus-preview
v4.51.3-LlamaGuard-preview
v4.51.3-MLCD-preview
v4.51.3-Qwen2.5-Omni-preview
v4.51.3-SAM-HQ-preview
v4.51.3-TimesFM-preview
v4.52.4-ColQwen2-preview
v4.52.4-Kyutai-STT-preview
v4.52.4-VJEPA-2-preview
v4.53.2-Ernie-4.5-preview
v4.53.2-modernbert-decoder-preview
v4.56.1-Vault-Gemma-preview
v4.6.0
v4.7.0
v4.8.0
v4.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1839.json"