Vulnerability · Published Apr 28, 2026 · Assigned by vmware

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

Medium 5.9

In plain English

A medium-severity improper access control in Spring AI from VMware. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)0.2%top 85.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.springframework.ai:spring-ai-advisors-vector-store	1.0.6	GHSA-v6x6-pjxw-3pv2
Maven	org.springframework.ai:spring-ai-advisors-vector-store	1.1.5	GHSA-v6x6-pjxw-3pv2

Affected products (as reported)

Vendor	Product	Versions
VMware	Spring AI	1.0.0 – before 1.0.61.1.0 – before 1.1.5

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

In plain English

Official description

Affected packages & fixed versions

Affected products (as reported)

References