CVE-2026-92972: Sgl-Project Sglang

High severity, CVSS 8.6. EPSS: 0.5% chance of exploitation in the next 30 days.

SGLang through 0.5.19 in prefill/decode disaggregation mode contains an unauthenticated PUT /route endpoint on the prefill bootstrap service that allows attackers to poison the KV transfer routing table. Attackers can supply arbitrary rank_ip and rank_port values to redirect decode workers to attacker-controlled endpoints, causing denial of service or disclosure of KV transfer metadata including session identifiers and tensor-parallel topology parameters.

Affected products

• Sgl-Project Sglang: up to and including 0.5.19

Published 2026-09-17. Last modified 2026-09-22.