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Vulnerability record · CVE-2026-40966 · published 28 April 2026

CVE-2026-40966: Vmware spring ai improper access control vulnerability

Vmware · Spring Ai

In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users’ 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.

5.9 CVSS 3.1 Medium EPSS 0.37% · top 71.5% CWE-284 · Improper access control
5.9CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users’ 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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 US Government Resource
https://spring.io/security/cve-2026-40966 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-59318Vmware spring ai incorrect authorization vulnerabilityIn Spring AI's tool calling support, the per-request tool list is advertised to the model as a boundary but is not fully enforced when a tool call is…EPSS 0.25%9.8CVE-2026-22738Vmware spring ai expression language injection vulnerabilityIn Spring AI, a SpEL injection vulnerability exists in SimpleVectorStore when a user-supplied value is used as a filter expression key. A malicious a…EPSS 1.1%8.8CVE-2026-40978Vmware spring ai sql injection vulnerabilitySQL injection vulnerability in Spring AI's `CosmosDBVectorStore` allows attackers to execute arbitrary SQL queries via crafted document IDs. Affected…EPSS 0.44%8.8CVE-2026-22730Vmware spring ai sql injection vulnerabilityA critical SQL injection vulnerability in Spring AI's MariaDBFilterExpressionConverter allows attackers to bypass metadata-based access controls and …EPSS 0.52%8.6CVE-2026-41705Vmware spring ai expression language injection vulnerabilitySpring AI's MilvusVectorStore#doDelete(List) implementation is vulnerable to filter-expression injection via unsanitized document IDs. Spring AI 1.0.…EPSS 0.39%8.6CVE-2026-40967Vmware spring ai code injection vulnerabilityIn Spring AI, various FilterExpressionConverter implementations accept a filter expression object and translate them to specific vector store query l…EPSS 0.39%8.6CVE-2026-22742Vmware spring ai server-side request forgery (ssrf) vulnerabilitySpring AI's spring-ai-bedrock-converse contains a Server-Side Request Forgery (SSRF) vulnerability in BedrockProxyChatModel when processing multimoda…EPSS 0.35%8.6CVE-2026-22729Vmware spring ai expression language injection vulnerabilityA JSONPath injection vulnerability in Spring AI's AbstractFilterExpressionConverter allows authenticated users to bypass metadata-based access contro…EPSS 0.53%

Source: NIST National Vulnerability Database (record CVE-2026-40966), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.