CVE-2026-14681
postgresql-17: Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to...
CVE-2026-14681 is fixed in 75 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
4.2
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0008
0th percentile
Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to pg_hba.conf rules, via initial direct TLS connection. Despite a pg_hba.conf that appears to require GSSAPI, the connection may exchange data over TLS encryption alone. If the TLS settings are more permissive than the GSS settings, the connection may continue with lesser protection. Within major versions 17-18, minor versions before PostgreSQL 18.6 and 17.11 are affected. Versions before PostgreSQL 17 are unaffected.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| 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 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libecpg6 18.6-0ubuntu0.26.04.1 | Aug 13, 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 26.04.1 LTS (resolute) | 18.6-0ubuntu0.26.04.1 | libpq5 18.6-0ubuntu0.26.04.1 | Aug 13, 2026 |
| postgresql-17 · Debian 13.5 (trixie) | 17.11-0+deb13u1 | DEBIAN-CVE-2026-14681 | Aug 14, 2026 |
| postgresql-18 · Debian 14 | 18.6-1 | DEBIAN-CVE-2026-14681 | 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-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-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-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-plpython3-18 · 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-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-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 |
| 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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