Quick answers
- Is CVE-2026-93998 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-93998 being exploited in the wild.
- How severe is CVE-2026-93998?
- High severity, with a CVSS score of 7.4, published 5 November 2026.
- Which products and versions are affected?
- Red Hat Keycloak.
- Is there a fix for CVE-2026-93998?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-93998 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-93998?
- Check whether you run Red Hat Keycloak. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The SAML adapter component does not validate that the assertion issuer matches the expected identity provider configuration, creating a logic flaw in SAML assertion validation. When multiple identity providers share the same signing key, an attacker can create validly signed but malicious assertions to authenticate as arbitrary users. This is a broken access control vulnerability requiring knowledge of the shared key and configuration but no user interaction.
Affected products
- Red Hat Keycloak
Timeline
- 2026-11-05: disclosed