CVE-2026-40966 — VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration
In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users’ chat histories, including secrets and credentials, by injecting fil…
Published: 2026-04-28 · CVSS: 5.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7