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Source-backed version compatibility

Keycloak PostgreSQL Version Compatibility

Keycloak PostgreSQL (Postgres) version compatibility. Keycloak 26.8 supported configurations list PostgreSQL 18.x, 17.x, 16.x, 15.x, and 14.x.

2Version groups
2Documented constraints
2026-10-08Last verified

Quick answer

PostgreSQL compatibility by Keycloak version

Supported and tested versions have compatibility evidence. Recommended and bundled versions describe upstream choices without establishing compatibility. Versions outside the documented coverage are unknown, not necessarily incompatible.

Keycloak version

26.8

Supported PostgreSQL versions

>=14.0.0 <19.0.0

Keycloak 26.8 supported configurations list PostgreSQL 18.x, 17.x, 16.x, 15.x, and 14.x.

high confidence · verified 2026-10-08 · database

Keycloak version

26.7

Supported PostgreSQL versions

>=14.0.0 <19.0.0

Keycloak 26.7 supported configurations list PostgreSQL 18.x, 17.x, 16.x, 15.x, and 14.x.

high confidence · verified 2026-10-08 · database

Primary evidence

Sources

Every constraint above is backed by upstream documentation, tagged source, release notes, or another project-owned primary source.

  1. Keycloak 26.8.0 supported database versionsAccessed 2026-10-08
  2. Keycloak 26.7.0 supported database versionsAccessed 2026-10-08
  3. Keycloak 26.7.4 supported database versionsAccessed 2026-10-08