Auth bypass in Spring Ai
CVE-2026-59318
In Spring AI's tool calling support, the per-request tool list is advertised to the model as a boundary but is not fully enforced when a tool call is dispatched. Under certain conditions, a tool that was not made available to the current request could be invoked, potentially leading to privilege escalation. Affected versions: Spring AI: 2.0.0 Spring AI: 1.1.0 through 1.1.8 Spring AI: 1.0.0 through 1.0.9
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N.
Affected products
- Spring Ai — versions 2.0.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-59318?
- CVE-2026-59318 is a medium-severity vulnerability in Spring Ai, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-08-21.
- How severe is CVE-2026-59318?
- Medium severity. CVSS v3 base score is 6.5 out of 10.