PYSEC-2026-3967

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/pytorch-lightning/PYSEC-2026-3967.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-3967
Aliases
Published
2026-07-15T18:16:48Z
Modified
2026-09-10T17:00:03Z
Severity
  • 8.4 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

PyTorch Lightning through 2.6.5, fixed in commit d710d68, contains a remote code execution vulnerability in the _load_state function that imports and executes attacker-controlled module names from checkpoint _instantiator hyperparameters. Attackers can craft malicious checkpoint files that bypass weights_only=True protections to execute arbitrary code when LightningModule.load_from_checkpoint is called.

References

Affected packages

PyPI / pytorch-lightning

Package

Name
pytorch-lightning
View open source insights on deps.dev
Purl
pkg:pypi/pytorch-lightning

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.6.6

Affected versions

0.*
0.0.2
0.2
0.2.2
0.2.3
0.2.4
0.2.4.1
0.2.5
0.2.5.1
0.2.5.2
0.2.6
0.3
0.3.1
0.3.2
0.3.3
0.3.4
0.3.4.1
0.3.5
0.3.6
0.3.6.1
0.3.6.3
0.3.6.4
0.3.6.5
0.3.6.6
0.3.6.7
0.3.6.8
0.3.6.9
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.4.5
0.4.6
0.4.7
0.4.8
0.4.9
0.5.0
0.5.1
0.5.1.2
0.5.1.3
0.5.2
0.5.2.1
0.5.3
0.5.3.1
0.5.3.2
0.5.3.3
0.6.0
0.7.1
0.7.3
0.7.5
0.7.6
0.8.1
0.8.3
0.8.4
0.8.5
0.9.0
0.10.0
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.1.7
1.1.8
1.2.0rc0
1.2.0rc1
1.2.0rc2
1.2.0
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
1.2.10
1.3.0rc1
1.3.0rc2
1.3.0rc3
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.7.post0
1.3.8
1.4.0rc0
1.4.0rc1
1.4.0rc2
1.4.0
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.4.6
1.4.7
1.4.8
1.4.9
1.5.0rc0
1.5.0rc1
1.5.0
1.5.1
1.5.2
1.5.3
1.5.4
1.5.5
1.5.6
1.5.7
1.5.8
1.5.9
1.5.10
1.5.10.post0
1.6.0rc0
1.6.0rc1
1.6.0
1.6.1
1.6.2
1.6.3
1.6.4
1.6.5
1.6.5.post0
1.7.0rc0
1.7.0rc1
1.7.0
1.7.1
1.7.2
1.7.3
1.7.4
1.7.5
1.7.6
1.7.7
1.8.0rc0
1.8.0rc1
1.8.0rc2
1.8.0
1.8.0.post1
1.8.1
1.8.2
1.8.3
1.8.3.post0
1.8.3.post1
1.8.3.post2
1.8.4
1.8.4.post0
1.8.5
1.8.5.post0
1.8.6
1.9.0rc0
1.9.0
1.9.1
1.9.2
1.9.3
1.9.4
1.9.5
2.*
2.0.0rc0
2.0.0
2.0.1
2.0.1.post0
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.0.9.post0
2.1.0rc0
2.1.0rc1
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.2.0rc0
2.2.0
2.2.0.post0
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.3.0
2.3.1
2.3.2
2.3.3
2.4.0
2.5.0rc0
2.5.0
2.5.0.post0
2.5.1rc0
2.5.1rc1
2.5.1rc2
2.5.1
2.5.1.post0
2.5.2
2.5.3
2.5.4
2.5.5
2.5.6
2.6.0.dev0
2.6.0
2.6.1
2.6.4
2.6.5

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/pytorch-lightning/PYSEC-2026-3967.yaml"