CVE-2026-86793

Description

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 code execution via pickle REDUCE.

References

https://vicone.com/blog/cve-2026-86793-sglang-bypass-could-let-attackers-run-code-on-ai-servers/

https://github.com/sgl-project/sglang/tree/main

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3