{"id":"CVE-2026-86793","title":"SGLang allows unauthenticated pickle deserialization through /update_weights_from_tensor when no auth keys are configured, and the SafeUnpickler policy can be bypassed because builtins.import and builtins.getattr are resolvable, enabling…","summary":"SGLang allows unauthenticated pickle deserialization through /update_weights_from_tensor when no auth keys are configured, and the SafeUnpickler policy can be bypassed because builtins.import and builtins.getattr are resolvable, enabling…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-94"],"vendor":"SGLang","product":"SGLang","affected":["SGLang <= 0.5.18"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T19:17:51.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86793","references":[{"url":"https://github.com/sgl-project/sglang/tree/main","label":"cret@cert.org"},{"url":"https://vicone.com/blog/cve-2026-86793-sglang-bypass-could-let-attackers-run-code-on-ai-servers/","label":"cret@cert.org"},{"url":"https://vicone.com/blog/cve-2026-86793-sglang-bypass-could-let-attackers-run-code-on-ai-servers/","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00428,"epssPercentile":0.36671,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-14T18:51:37.042701Z"},"ingestedAt":"2026-09-11T16:45:47.860Z","slug":"CVE-2026-86793","body":"## Overview\n\nSGLang allows unauthenticated pickle deserialization through /update_weights_from_tensor when no auth keys are configured, and the SafeUnpickler policy can be bypassed because builtins.import and builtins.getattr are resolvable, enabling code execution via pickle REDUCE.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":203168,"id":"CVE-2026-86793","ts":1789413239941,"field":"exploit_available","old":"false","new":"true"},{"seq":203167,"id":"CVE-2026-86793","ts":1789413239941,"field":"cvss","old":null,"new":"9.8"},{"seq":203166,"id":"CVE-2026-86793","ts":1789413239941,"field":"severity","old":"none","new":"critical"}]}