High [CVE-2026-90997] Replay protection bypass leads to unauthorized access via database driver semantics mismatch
This high-severity Red Hat Linux advisory covers CVE-2026-90997.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
Replay protection bypass leads to unauthorized access via database driver semantics mismatch. Red Hat rates this important (CVSS 7.4).
Weakness: CWE-294.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- To mitigate this issue, configure the JDBC connection string for MySQL/MariaDB to explicitly set `useAffectedRows=true`. This ensures the database driver correctly reports affected rows, preventing the replay protection bypass. This mitigation is applicable only when Keycloak is deployed in stateless mode and utilizes MySQL or MariaDB as its database. A restart of the Keycloak service will be required for the configuration change to take effect.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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