{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-111392", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-15T21:55:44.538Z", "datePublished": "2026-10-16T17:38:44.867Z", "dateUpdated": "2026-10-16T19:24:54.109Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-16T17:38:44.867Z" }, "datePublic": "2026-10-16T00:00:00.000Z", "title": "SGLang through 0.5.21 KV Cache Poisoning via mm_hashes in /generate", "descriptions": [ { "lang": "en", "value": "SGLang through 0.5.21 trusts caller-supplied mm_hashes 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 corrupt victims' responses." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Insufficient Verification of Data Authenticity", "cweId": "CWE-345", "type": "CWE" } ] } ], "affected": [ { "vendor": "sgl-project", "product": "sglang", "defaultStatus": "unaffected", "versions": [ { "version": "0.5.13", "lessThanOrEqual": "0.5.21", "status": "affected", "versionType": "custom" } ], "packageURL": "pkg:github/sgl-project/sglang", "repo": "https://github.com/sgl-project/sglang" } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/sgl-project/sglang/issues/44641", "tags": [ "issue-tracking" ] }, { "url": "https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/managers/tokenizer_manager.py#L1183-L1215", "tags": [ "technical-description" ] }, { "url": "https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/managers/io_struct.py#L205-L215", "tags": [ "technical-description" ] }, { "url": "https://github.com/sgl-project/sglang/pull/44653", "tags": [ "patch", "issue-tracking" ] }, { "name": "VulnCheck Advisory: SGLang through 0.5.21 KV Cache Poisoning via mm_hashes in /generate", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/sglang-through-0.5.21-kv-cache-poisoning-via-mm-hashes-in-generate" } ], "credits": [ { "lang": "en", "value": "Mingkai Yu", "type": "finder" }, { "lang": "en", "value": "Jiadai Wang", "type": "finder" }, { "lang": "en", "value": "Jiajia Liu", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "references": [ { "url": "https://github.com/sgl-project/sglang/issues/44641", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-16T19:24:20.694655Z", "id": "CVE-2026-111392", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:24:54.109Z" } } ] } }