CVE-2026-92972
highSGLang through 0.5.19 in prefill/decode disaggregation mode contains an unauthenticated PUT /route endpoint on the prefill bootstrap service that allows attack…
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/sgl-project/sglang disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.19/python/sglang/srt/disaggregation/common... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.19/python/sglang/srt/disaggregation/common... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/issues/39400 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/sglang-through-0.5.19-unauthenticated-route-poisoning... disclosure@vulncheck.com