Is org.springframework.boot:spring-boot affected by CVE-2026-40976?

Maven org.springframework.boot:spring-boot is affected in >=4.0.0 <4.0.6.

Is CVE-2026-40976 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

critical

CVE-2026-40976

Q: Is CVE-2026-40976 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Maven · org.springframework.boot:spring-boot

Summary

Spring Boot's default security filter chain has no authorization rule with Actuator but without Health

Severity: critical
EPSS: 0.4% (p33)
Also known as: GHSA-8v8j-3hxp-93wr
Published: 2026-04-28

References

https://nvd.nist.gov/vuln/detail/CVE-2026-40976
https://github.com/spring-projects/spring-boot
https://spring.io/security/cve-2026-40976

Related advisories

CVE-2026-40973 — high · Maven/org.springframework.boot:spring-boot
CVE-2025-22235 — high · Maven/org.springframework.boot:spring-boot

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.