VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration_CVE-2026-40966

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-04-28T06:42:36.619Z",
    "modified": "2026-04-28T06:49:32.025Z",
    "type": "cve",
    "title": "VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration",
    "source": "vmware",
    "references": "https://spring.io/security/cve-2026-40966\nhttps://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",
    "id": "CVE-2026-40966",
    "bulletinFamily": "",
    "cwe": [
        "CWE-284"
    ],
    "cvelist": null,
    "sourceData": "VMware Spring AI 1.0.0\nVMware Spring AI 1.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Spring AI",
    "version": "1.0.0",
    "vendor": "VMware",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}