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CVE-2026-40966

25
FAUCET Score

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.

First published: Apr 28, 2026Last modified: Apr 28, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, < 1.0.6CPE match
cpe:2.3:a:vmware:spring_ai:*:*:*:*:*:*:*:*
>= 1.1.0, < 1.1.5CPE match
cpe:2.3:a:vmware:spring_ai:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
14.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 1st percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.springframework.ai:spring-ai-advisors-vector-storeFixed in: 1.0.6
mavenpatch availablevia ghsa
Product: org.springframework.ai:spring-ai-advisors-vector-storeFixed in: 1.1.5

Vendor Advisories (1)

mavenGHSA-v6x6-pjxw-3pv2medium

Spring AI's VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration

Apr 28, 2026

References

nvd.nist.gov / vuln-metrics/cvss/v3-calculator
US Government Resource
spring.io / security/cve-2026-40966
Vendor Advisory