CVE-2026-47838
Fixed in a distro release EPSS <1%CVSS 6.8
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.
Products: Spring Security
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | org.springframework.security:spring-security-web | 6.5.11 |
| Maven | org.springframework.security:spring-security-web | no fix |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | camunda-zeebe-8.6 | 8.6.40-r0 |
| Chainguard | geoserver-2.27 | no fix |
| Chainguard | geoserver-2.28 | no fix |
| Chainguard | jenkins-2.528-openjdk-17 | no fix |
| Chainguard | jenkins-2.528-openjdk-21 | no fix |
| Chainguard | jenkins-2.541 | no fix |
| Chainguard | jenkins-2.541-openjdk-17 | no fix |
| Chainguard | jenkins-2.541-openjdk-21 | no fix |
| Chainguard | jenkins-2.541-openjdk-25 | no fix |
| Chainguard | jenkins-2.555 | 2.555.3-r1 |
| Chainguard | jenkins-2.555-openjdk-21 | 2.555.3-r1 |
| Chainguard | jenkins-2.555-openjdk-25 | 2.555.3-r1 |
| Chainguard | kafbat-ui | 1.5.0-r5 |
| Chainguard | kafbat-ui-fips | 1.5.0-r4 |
| Chainguard | kayenta-2025.2 | no fix |
| Chainguard | kayenta-2025.4 | no fix |
| Chainguard | kayenta-2026.0 | no fix |
| Chainguard | kayenta-2026.1 | no fix |
| Chainguard | kayenta-fips-2025.2 | no fix |
| Chainguard | kayenta-fips-2025.4 | no fix |
| Chainguard | kayenta-fips-2026.0 | no fix |
| Chainguard | kayenta-fips-2026.1 | no fix |
| Chainguard | nacos | 3.2.3-r1 |
| Chainguard | nacos-docker | 3.2.3-r1 |
| Chainguard | ranger | no fix |