CVE-2026-40966

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.

Score

CVSS 3.1 5.9 Medium

Status

Analyzed - security@vmware.com

Published

2026-04-28

Last modified

2026-10-26

Weaknesses

CWE-284

Affected products

• Spring Ai (Vmware)

References

• https://spring.io/security/cve-2026-40966
• 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