CVE-2026-4282
Fixed in a distro release EPSS <1%CVSS 7.4
A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.
Products: Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.2.15, Red Hat build of Keycloak 26.4, Red Hat build of Keycloak 26.4.11
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | org.keycloak:keycloak-services | 26.5.7 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | keycloak-26.3-iamguarded-compat | no fix |
| Chainguard | keycloak-26.4 | no fix |
| Chainguard | keycloak-26.4-iamguarded-compat | no fix |
| Chainguard | keycloak-26.5 | 26.5.7-r0 |
| Chainguard | keycloak-26.5-iamguarded-compat | 26.5.7-r0 |
| Chainguard | keycloak-fips-26.3-iamguarded-fips | no fix |
| Chainguard | keycloak-fips-26.4 | no fix |
| Chainguard | keycloak-fips-26.4-iamguarded-fips | no fix |
| Chainguard | keycloak-fips-26.5 | 26.5.6-r4 |
| Chainguard | keycloak-fips-26.5-iamguarded-fips | 26.5.6-r4 |
| Chainguard | request-9047-keycloak-fips-26.4 | no fix |
| Chainguard | request-9047-keycloak-fips-26.4-iamguarded-fips | no fix |
| Wolfi | keycloak-26.4 | no fix |
| Wolfi | keycloak-26.4-iamguarded-compat | no fix |
| Wolfi | keycloak-26.5 | 26.5.7-r0 |
| Wolfi | keycloak-26.5-iamguarded-compat | 26.5.7-r0 |