| Package | Affected versions | Patched versions |
|---|---|---|
| postgresql | ≥ 14.0, < 14.24≥ 15.0, < 15.19≥ 16.0, < 16.15≥ 17.0, < 17.11≥ 18.0, < 18.5 | 14.2415.1916.1517.1118.5 |
Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scram_iterations count, because the authentication challenge for a nonexistent user reports the default scram_iterations. Within major versions 16-18, minor versions before PostgreSQL 18.6, 17.11, and 16.15 are affected. Versions before PostgreSQL 16 are unaffected.
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