CVE-2026-22733: Authentication Bypass under Actuator CloudFoundry endpoints

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-19 · updated 2026-06-17
Weakness: CWE-288

Description

Spring Boot applications with Actuator can be vulnerable to an "Authentication Bypass" vulnerability when an application endpoint that requires authentication is declared under the path used by the CloudFoundry Actuator endpoints. This issue affects Spring Security: from 4.0.0 through 4.0.3, from 3.5.0 through 3.5.11, from 3.4.0 through 3.4.14, from 3.3.0 through 3.3.17, from 2.7.0 through 2.7.31.

Affected products

Spring Boot: before 2.7.32; from 3.3.0 before 3.3.18; from 3.4.0 before 3.4.15; from 3.5.0 before 3.5.12; from 4.0.0 before 4.0.4 — fixed in 2.7.32, 3.3.18, 3.4.15, 3.5.12, 4.0.4
Spring Security: from 4.0.0 through 4.0.3; from 3.5.0 through 3.5.11; from 3.4.0 through 3.4.14; from 3.3.0 through 3.3.17; from 2.7.0 through 2.7.31

How to fix

Upgrade to a fixed version: Spring Boot 2.7.32, 3.3.18, 3.4.15, 3.5.12. Check the vendor advisory for mitigations.

References

https://spring.io/security/cve-2026-22733

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