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Vulnerability details: VCID-wkqx-hf5c-8kae
Vulnerability ID VCID-wkqx-hf5c-8kae
Aliases CVE-2026-1839
GHSA-69w3-r845-3855
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-502 Deserialization of Untrusted Data
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 6.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1839.json
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2026-1839
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2026-1839
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-69w3-r845-3855
cvssv3.1 6.5 https://github.com/huggingface/transformers
generic_textual MODERATE https://github.com/huggingface/transformers
cvssv3 6.5 https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
cvssv3.1 6.5 https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
generic_textual MODERATE https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
ssvc Track* https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
cvssv3.1 6.5 https://github.com/huggingface/transformers/releases/tag/v5.0.0rc3
generic_textual MODERATE https://github.com/huggingface/transformers/releases/tag/v5.0.0rc3
cvssv3 6.5 https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
cvssv3.1 6.5 https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
generic_textual MODERATE https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
ssvc Track* https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2026-1839
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-1839
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1839.json
https://api.first.org/data/v1/epss?cve=CVE-2026-1839
https://github.com/huggingface/transformers
https://github.com/huggingface/transformers/releases/tag/v5.0.0rc3
https://nvd.nist.gov/vuln/detail/CVE-2026-1839
03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396 https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
2455854 https://bugzilla.redhat.com/show_bug.cgi?id=2455854
3c77bb97-e493-493d-9a88-c57f5c536485 https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
GHSA-69w3-r845-3855 https://github.com/advisories/GHSA-69w3-r845-3855
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1839.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://github.com/huggingface/transformers
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-07T13:27:38Z/ Found at https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://github.com/huggingface/transformers/releases/tag/v5.0.0rc3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-07T13:27:38Z/ Found at https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-1839
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Exploit Prediction Scoring System (EPSS)
Percentile 0.06727
EPSS Score 0.00023
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:49:48.805332+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/1xxx/CVE-2026-1839.json 38.6.0