Input validation error in Spring AI - CVE-2026-40966

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Main Vulnerability Database Vulnerabilities #VU128237

Input validation error in Spring AI - CVE-2026-40966

Published: April 27, 2026


Vulnerability identifier: #VU128237
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-40966
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Pivotal
Affected software:
Spring AI

Detailed vulnerability description

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper input validation in VectorStoreChatMemoryAdvisor when processing user-supplied conversationId values. A remote attacker can inject crafted filter logic to disclose sensitive information.

Only applications that pass user-supplied input as a conversationId are vulnerable.


How to mitigate CVE-2026-40966

Install security update from vendor's website.

Sources