{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40966", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-04-16T02:18:56.133Z", "datePublished": "2026-04-28T06:42:36.619Z", "dateUpdated": "2026-04-28T06:49:32.025Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-04-28T06:49:32.025Z"}, "title": "VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control", "type": "CWE"}]}], "affected": [{"vendor": "VMware", "product": "Spring AI", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.0.6", "versionType": "OSS"}, {"status": "affected", "version": "1.1.0", "lessThan": "1.1.5", "versionType": "oss"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users\u2019 chat histories, including secrets and credentials, by injecting filter logic through conversationId. Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input as a conversationId are affected.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users\u2019 chat histories, including secrets and credentials, by injecting filter logic through conversationId. Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input as a conversationId are affected.</p>"}]}], "references": [{"url": "https://spring.io/security/cve-2026-40966"}, {"url": "https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?version=3.1&vector=AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.9, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}}], "credits": [{"lang": "en", "value": "Jinyeong Seol Seol-JY; Cantina's AppSec agent, Apex ( https://www.cantina.security )", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users\u2019 chat histories, including secrets and credentials, by injecting filter logic through conversationId. Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input as a conversationId are affected."}], "id": "CVE-2026-40966", "lastModified": "2026-04-28T08:16:01.283", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security@vmware.com", "type": "Secondary"}]}, "published": "2026-04-28T08:16:01.283", "references": [{"source": "security@vmware.com", "url": "https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?version=3.1&vector=AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}, {"source": "security@vmware.com", "url": "https://spring.io/security/cve-2026-40966"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security@vmware.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,1.0.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.1.0,1.1.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Spring AI", "source": "cna", "vendor": "VMware"}, "product": "spring_ai", "vendor": "vmware"}], "created": "2026-04-28T09:25:18.811761+00:00", "updated": "2026-04-28T09:25:18.811860+00:00", "vendors": ["vmware", "vmware$PRODUCT$spring_ai"]}