CVE-2026-93688highCWE-770

CVE-2026-93688: high-severity vulnerability in sgl-project sglang

SGLang through 0.5.19 Unbounded Memory Allocation via bootstrap_room

Published · Updated

Follow this CVE+ Monitor sglang

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.7%
SGLang through 0.5.19 in prefill/decode disaggregation mode with Mooncake KV transfer backend fails to validate bootstrap_room values, allowing unbounded transfer state allocation. Unauthenticated attackers can reach the decode engine's POST /generate endpoint and submit arbitrary bootstrap_room values to exhaust prefill process memory until out-of-memory termination.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
sgl-project · sglang
Related CVEs — sgl-project sglang

In the same product, most dangerous first.

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%CVE-2026-109228HIGHSGLang through 0.5.21 Resource Budget Bypass via GLM-V Video ParametersEPSS 0.5%