What’s Vulnerable › Vulnerabilities

CVE-2023-20873

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-20 · updated 2026-06-17

Description

In Spring Boot versions 3.0.0 - 3.0.5, 2.7.0 - 2.7.10, and older unsupported versions, an application that is deployed to Cloud Foundry could be susceptible to a security bypass. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.6+. 2.7.x users should upgrade to 2.7.11+. Users of older, unsupported versions should upgrade to 3.0.6+ or 2.7.11+.

Affected products

• Spring Boot: before 2.5.15; from 2.6.0 before 2.6.14; from 2.7.0 before 2.7.11; from 3.0.0 before 3.0.6 — fixed in 2.5.15, 2.6.14, 2.7.11, 3.0.6
• Spring Boot: from Spring Boot versions 3.0.0 through 3.0.5, 2.7.0 - 2.7.10, and older unsupported versions

How to fix

Upgrade to a fixed version: Spring Boot 2.5.15, 2.6.14, 2.7.11, 3.0.6. Check the vendor advisory for mitigations.

References

• https://security.netapp.com/advisory/ntap-20230601-0009/
• https://spring.io/blog/2023/05/18/spring-boot-2-5-15-and-2-6-15-available-now
• https://spring.io/security/cve-2023-20873
• https://security.netapp.com/advisory/ntap-20230601-0009/
• https://spring.io/blog/2023/05/18/spring-boot-2-5-15-and-2-6-15-available-now
• https://spring.io/security/cve-2023-20873

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