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DefaultToolCallingManager Global Resolver Fallback Allows Unadvertised Tool Dispatch via Prompt Injection

MEDIUM | AUGUST 20, 2026 | CVE-2026-59318

Description

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 Spring Products and Versions

Spring AI:

  • 2.0.0 - 2.0.0
  • 1.1.0 - 1.1.8
  • 1.0.0 - 1.0.9

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
2.0.1OSS
2.0.0.1Enterprise Support Only
1.1.9Enterprise Support Only
1.0.10Enterprise Support Only

No further mitigation steps are necessary.

Credit

The issue was reported responsibly by Arjun Basnet, from Securin and ChangMin Lee ([email protected])

References

History

  • 2026-08-20: Initial vulnerability report published.

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy

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