Description
A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | keycloak | 11.0.3, 12.0.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Single Sign On 7 | rh-sso7-keycloak +1 | 9.0.15-1.redhat_00002.1.el6sso | RHSA-2021:3529, RHSA-2021:3528, RHSA-2021:3527 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.keycloak:keycloak-core | < 14.0.0 | 14.0.0 | GHSA-rpj2-w6fr-79hc |
Advisories 3
- RHSA-2021:3529 Red Hat Security Advisory: Red Hat Single Sign-On 7.4.9 security update on RHEL 8 Red Hat Security Advisories (RHSA) · Aug 14, 2026
- RHSA-2021:3527 Red Hat Security Advisory: Red Hat Single Sign-On 7.4.9 security update on RHEL 6 Red Hat Security Advisories (RHSA) · Aug 14, 2026
- RHSA-2021:3528 Red Hat Security Advisory: Red Hat Single Sign-On 7.4.9 security update on RHEL 7 Red Hat Security Advisories (RHSA) · Aug 14, 2026