CVE-2026-40966
Spring AI's VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration
5.9
MEDIUM
CVSS 3.1
EPSS 0.05%
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.
How to fix CVE-2026-40966
To remediate CVE-2026-40966, upgrade the affected package to a fixed version below.
- —upgrade to 1.0.6 or later
Is CVE-2026-40966 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 1.0.0, < 1.0.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |