Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Spring AI's spring-ai-advisors-vector-store package, versions 1.0.0 to before 1.0.6 and 1.1.0 to before 1.1.5, is vulnerable. An attacker who can supply the conversationId can inject filter logic to bypass conversation isolation and read other users' chat memory, which may include secrets and credentials. Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input as the conversationId are affected. Upgrade to version 1.0.6 or 1.1.5, or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.9 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA (vmware) |
- CISA KEV Not listed.
- EPSS 0.0023, the 14th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:19 UTC First seen by agentprime
- 31 Oct 2026, 14:19 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-v6x6-pjxw-3pv2
- OSV: GHSA-v6x6-pjxw-3pv2
- nvd.nist.gov/vuln/detail/CVE-2026-40966
- github.com/spring-projects/spring-ai
- jinyeong.seol.pro/blogs/cve-2026-40966/en
- nvd.nist.gov/vuln-metrics/cvss/v3-calculator?version=3.1&vector=AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- spring.io/security/cve-2026-40966