CVE-2026-111392

SGLang versions through 0.5.21 are vulnerable to KV Cache Poisoning due to insufficient verification of mm_hashes values used as multimodal prefix-cache keys. A remote attacker can exploit this by sending a different image with a known or predicted hash via the /generate endpoint. This allows the...

CVE-2026-111392 SGLang through 0.5.21 KV Cache Poisoning via mm_hashes in /generate

SGLang through 0.5.21 trusts caller-supplied mmhashes values as the multimodal prefix-cache key, allowing remote attackers to poison cached KV entries across requests. Attackers can send a different image under a known or predicted hash via /generate to disclose another request's image content or...