CVE-2024-38827 Spring Security Authorization Bypass for Case Sensitive Comparisons
Attackers can bypass authorization rules due to locale-dependent string comparison flaws in Spring Security, potentially gaining unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-38827?
CVE-2024-38827 is a medium-severity authentication bypass vulnerability in Spring Security, published on 2 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The usage of String.toLowerCase() and String.toUpperCase() has some Locale dependent exceptions that could potentially result in authorization rules not working properly.
Weakness: CWE-639
Which versions are affected by CVE-2024-38827?
12 open source packages ship an affected version, including org.springframework.security:spring-security-core.
| Package | Affected | Fixed in |
|---|---|---|
org.springframework.security:spring-security-core Maven | All versions | 5.7.14 |
org.springframework.security:spring-security-core Maven | All versions | 5.7.14 |
org.springframework.security:spring-security-core Maven | From 5.8.0 | 5.8.16 |
org.springframework.security:spring-security-core Maven | From 5.8.0 | 5.8.16 |
org.springframework.security:spring-security-core Maven | From 6.0.0 | 6.0.14 |
org.springframework.security:spring-security-core Maven | From 6.0.0 | 6.0.14 |
6 more packages
org.springframework.security:spring-security-core Maven | From 6.1.0 | 6.1.12 |
org.springframework.security:spring-security-core Maven | From 6.1.0 | 6.1.12 |
org.springframework.security:spring-security-core Maven | From 6.2.0 | 6.2.8 |
org.springframework.security:spring-security-core Maven | From 6.2.0 | 6.2.8 |
org.springframework.security:spring-security-core Maven | From 6.3.0 | 6.3.5 |
org.springframework.security:spring-security-core Maven | From 6.3.0 | 6.3.5 |
How do I fix CVE-2024-38827?
Upgrade org.springframework.security:spring-security-core to a fixed version for your release line: 5.7.14, 5.8.16, 6.0.14 or 6.1.12.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2024-38827 being exploited?
There is no known exploitation of CVE-2024-38827 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2026-QB96901, ECHO-74b0-b853-7934, GHSA-q3v6-hm2v-pw99, ROOT-APP-MAVEN-CVE-2024-38827.