6.8
Medium
CVE-2026-47838 SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can…
Description
SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. Affected versions: Spring Security 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Spring Security 6.5 | 6.5.0 → < 6.5.10.2 | 6.5.10.2 |
| Spring Security 6.4 | 6.4.0 → < 6.4.18 | 6.4.18 |
| Spring Security 6.3 | 6.3.0 → < 6.3.18 | 6.3.18 |
| Spring Security 5.8 | 5.8.0 → < 5.8.27 | 5.8.27 |
| Spring Security 5.7 | 5.7.0 → < 5.7.25 | 5.7.25 |
References
- spring.io spring.io
Timeline
- Published
- Last modified
Other CVEs of Spring Security
The 29 CVEs of Spring Security →
CVE-2026-59277
Spring Security's InetAddressMatchers utility provides matchInternal() and matchExternal() builders for constructing…
3.7
Low
CVE-2026-59276
Several components in Spring Security compare security-sensitive values using standard string equality (String.equals())…
5.9
Medium
CVE-2026-59270
Spring Security's embedded UnboundID LDAP server (UnboundIdContainer) unconditionally registers an administrative…
9.4
Critical
CVE-2026-47877
Spring Security Authorization Server's default consent page renders user-controlled values without HTML entity encoding
8.2
High