{"id":"CVE-2026-58659","aliases":["EUVD-2026-44751","GHSA-qqmf-gpg7-g8gw","PYSEC-2026-3624","PYSEC-2026-3967"],"status":"published","title":"PyTorch Lightning Arbitrary Code Execution via _instantiator Hyperparameter","description":"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. 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Tracking","Mitigation","report","web"]},{"url":"https://github.com/Lightning-AI/pytorch-lightning/pull/21832","tags":["issue-tracking","patch","Issue Tracking","Patch","fix","web"]},{"url":"https://github.com/Lightning-AI/pytorch-lightning/commit/d710d689510d50e800f53b3cd773cbca20b1f86f","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/pytorch-lightning-arbitrary-code-execution-via-instantiator-hyperparameter","tags":["third-party-advisory","Exploit","Patch","Third Party Advisory","advisory","web","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58659","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/lightning/PYSEC-2026-3624.yaml","tags":["web"]},{"url":"https://github.com/Lightning-AI/pytorch-lightning/releases/tag/2.6.6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qqmf-gpg7-g8gw","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/pytorch-lightning/PYSEC-2026-3967.yaml","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58659.json","tags":["advisory"]},{"url":"https://github.com/Lightning-AI/pytorch-lightning","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-58659","title":"PyTorch Lightning Arbitrary Code Execution via _instantiator Hyperparameter","description":"PyTorch Lightning through 2.6.5, fixed in commit d710d68, contains a remote code execution vulnerability in the _load_state function that 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Attackers can craft malicious checkpoint files that bypass weights_only=True protections to execute arbitrary code when LightningModule.load_from_checkpoint is called.","status":"published","published":"2026-07-15T17:02:40.64Z","modified":"2026-11-09T02:47:26.313185204Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"cwes":["CWE-470"],"updated_at":"2026-11-09T03:16:17.543303Z"},{"id":"GHSA-qqmf-gpg7-g8gw","title":" PyTorch Lightning allows arbitrary code execution through checkpoint _instantiator hyperparameters","description":"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.","status":"published","published":"2026-07-15T18:31:58Z","modified":"2026-09-24T15:45:09.719284514Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"cwes":["CWE-470"],"updated_at":"2026-11-02T15:46:54.760124Z"},{"id":"PYSEC-2026-3624","description":"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.","status":"published","published":"2026-07-15T18:16:48.743Z","modified":"2026-09-10T13:10:44.573169284Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"updated_at":"2026-11-02T15:52:56.847083Z"},{"id":"PYSEC-2026-3967","description":"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.","status":"published","published":"2026-07-15T18:16:48.743Z","modified":"2026-09-10T17:00:03.267154781Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"updated_at":"2026-11-02T15:52:57.255153Z"}]}}