CVE-2026-14672
PostgreSQL observable response discrepancy with non-default scram_iterations provides user existence oracle
CVE-2026-14672 is fixed in 112 products on 1 platform, first by libecpg-compat3 18.6-0ubuntu0.26.04.1, released August 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.3
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
33rd percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libecpg-compat3 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | libecpg-compat3 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| libecpg-compat3 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libecpg-compat3 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| libecpg6 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | libecpg6 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| libecpg6 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libecpg6 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| libpgtypes3 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | libpgtypes3 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| libpgtypes3 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libpgtypes3 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| libpq-oauth · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libpq-oauth 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| libpq5 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | libpq5 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| libpq5 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libpq5 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-17 · Debian 13.5 (trixie) | 17.11-0+deb13u1 | DEBIAN-CVE-2026-14672 | Aug 14, 2026 |
| postgresql-18 · Debian 14 | 18.6-1 | DEBIAN-CVE-2026-14672 | Aug 14, 2026 |
| postgresql-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-18-jit · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-18-jit 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-client-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-client-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-client-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-client-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-doc-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-doc-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-doc-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-doc-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-plperl-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-plperl-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-plperl-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-plperl-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-plpython3-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-plpython3-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-plpython3-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-plpython3-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-pltcl-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-pltcl-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-pltcl-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-pltcl-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-server-dev-16 · Ubuntu 24.04.5 LTS (noble) | 16.15-0ubuntu0.24.04.1 | postgresql-server-dev-16 16.15-0ubuntu0.24.04.1 | Aug 21, 2026 |
| postgresql-server-dev-18 · Ubuntu 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | postgresql-server-dev-18 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql16 · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16 · opensuse-leap 16.0 | 16.15-160000.1.1 | OPENSUSE-SU-2026:21701-1 | Aug 30, 2026 |
| postgresql16 · sles 15.6 | 16.15-150600.16.38.1 | SUSE-SU-2026:3963-1 | Sep 3, 2026 |
| postgresql16 · sles 15.7 | 16.15-150600.16.38.1 | SUSE-SU-2026:3963-1 | Sep 3, 2026 |
| postgresql16 · sles 16.0 | 16.15-160000.1.1 | SUSE-SU-2026:23580-1 | Aug 30, 2026 |
| postgresql16-contrib · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-contrib-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-debugsource · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-docs · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-docs-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-llvmjit · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-llvmjit-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-plperl · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-plperl-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-plpython3 · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-plpython3-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-pltcl · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-pltcl-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-private-devel · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-private-libs · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-private-libs-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-server · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-server-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-server-devel · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-server-devel-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-static · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-test · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-test-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-test-rpm-macros · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-upgrade · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-upgrade-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-upgrade-devel · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql16-upgrade-devel-debuginfo · amzn 2023 | 16.15-1.amzn2023.0.1 | ALAS2023-2026-2078 | Aug 31, 2026 |
| postgresql17 · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17 · opensuse-leap 16.0 | 17.11-160000.1.1 | OPENSUSE-SU-2026:21702-1 | Aug 30, 2026 |
| postgresql17 · sles 15.6 | 17.11-150600.13.32.1 | SUSE-SU-2026:4016-1 | Sep 7, 2026 |
| postgresql17 · sles 15.7 | 17.11-150600.13.32.1 | SUSE-SU-2026:4016-1 | Sep 7, 2026 |
| postgresql17 · sles 16.0 | 17.11-160000.1.1 | SUSE-SU-2026:23582-1 | Aug 30, 2026 |
| postgresql17-contrib · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-contrib-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-debugsource · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-docs · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-docs-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-llvmjit · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-llvmjit-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-plperl · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-plperl-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-plpython3 · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-plpython3-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-pltcl · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-pltcl-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-private-devel · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-private-libs · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-private-libs-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-server · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-server-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-server-devel · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-server-devel-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-static · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-test · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-test-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-test-rpm-macros · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-upgrade · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-upgrade-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-upgrade-devel · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql17-upgrade-devel-debuginfo · amzn 2023 | 17.11-1.amzn2023.0.1 | ALAS2023-2026-2076 | Aug 31, 2026 |
| postgresql18 · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18 · opensuse-leap 16.0 | 18.6-160000.1.1 | OPENSUSE-SU-2026:21703-1 | Aug 30, 2026 |
| postgresql18 · sles 15.6 | 18.6-150600.13.16.1 | SUSE-SU-2026:4014-1 | Sep 7, 2026 |
| postgresql18 · sles 15.7 | 18.6-150600.13.16.1 | SUSE-SU-2026:4014-1 | Sep 7, 2026 |
| postgresql18 · sles 16.0 | 18.6-160000.1.1 | SUSE-SU-2026:23577-1 | Aug 30, 2026 |
| postgresql18-contrib · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-contrib-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-debugsource · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-docs · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-docs-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-llvmjit · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-llvmjit-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-mini · opensuse-leap 16.0 | 18.6-160000.1.1 | OPENSUSE-SU-2026:21703-1 | Aug 30, 2026 |
| postgresql18-plperl · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-plperl-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-plpython3 · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-plpython3-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-pltcl · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-pltcl-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-private-devel · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-private-libs · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-private-libs-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-server · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-server-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-server-devel · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-server-devel-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-static · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-test · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-test-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-test-rpm-macros · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-upgrade · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-upgrade-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-upgrade-devel · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
| postgresql18-upgrade-devel-debuginfo · amzn 2023 | 18.6-1.amzn2023.0.1 | ALAS2023-2026-2079 | Aug 31, 2026 |
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