CVE-2026-92972: high-severity vulnerability in sgl-project sglang
SGLang through 0.5.19 Unauthenticated Route Poisoning via PUT endpoint
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.5%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Affected products
sgl-project · sglangRelated CVEs — sgl-project sglang
In the same product, most dangerous first.
CVE-2026-93688HIGHSGLang through 0.5.19 Unbounded Memory Allocation via bootstrap_roomEPSS 0.7%CVE-2026-93838HIGHSGLang through 0.5.20 Unbounded Memory Allocation via STAGING_REQ chunk_idxEPSS 0.7%CVE-2026-102634HIGHSGLang through 0.5.20 Denial of Service via Duplicate bootstrap_roomEPSS 0.6%CVE-2026-109226HIGHSGLang through 0.5.21 Audio Decompression Amplification via load_audioEPSS 0.6%CVE-2026-109229HIGHSGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessorEPSS 0.5%CVE-2026-109227HIGHSGLang through 0.5.21 Memory Exhaustion DoS via Qwen-VL Video PreprocessingEPSS 0.5%
References
https://github.com/sgl-project/sglanghttps://github.com/sgl-project/sglang/blob/v0.5.19/python/sglang/srt/disaggregation/common/conn.py#L1716-L1718https://github.com/sgl-project/sglang/blob/v0.5.19/python/sglang/srt/disaggregation/common/conn.py#L1736-L1810https://github.com/sgl-project/sglang/issues/39400https://www.vulncheck.com/advisories/sglang-through-0.5.19-unauthenticated-route-poisoning-via-put-endpoint