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Fencer Vulns
medium 4.2

CVE-2026-14681 json

PostgreSQL improper enforcement of GSSAPI encryption when coupled with SSL

published 2026-08-13 2 mo ago modified 2026-09-08 2 mo ago also BIT-postgresql-2026-14681 , EUVD-2026-57845

cvss
4.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami postgresql 17.11.0, 18.5.0
  • n/a PostgreSQL 17.11, 18.6
  • postgresql-17 Debian 13 17.11-0+deb13u1
  • postgresql-18 Debian 14 18.6-1

debian advisories DEBIAN-CVE-2026-14681

  • postgresql-18 Ubuntu 26.04 LTS 18.6-0ubuntu0.26.04.1

ubuntu advisories UBUNTU-CVE-2026-14681

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • postgresql17 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Server Applications 15 SP7 +2 more 17.11-150600.13.32.1
  • postgresql18 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 18.6-150200.5.17.1
  • postgresql18 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Server Applications 15 SP7 +2 more 18.6-150600.13.16.1
  • postgresql17 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 17.11-150200.5.33.1
  • postgresql17 SLES for SAP applications 16.0, SLES 16.0 17.11-160000.1.1
  • postgresql18 SLES for SAP applications 16.0, SLES 16.0 18.6-160000.1.1
  • postgresql18 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 18.6-8.17.1

suse advisories SUSE-SU-2026:4016-1SUSE-SU-2026:4015-1SUSE-SU-2026:4014-1SUSE-SU-2026:4013-1SUSE-SU-2026:3942-1SUSE-SU-2026:23582-1

  • postgresql17 openSUSE Leap 16.0 17.11-160000.1.1
  • postgresql18 openSUSE Leap 16.0 18.6-160000.1.1
  • postgresql18-mini openSUSE Leap 16.0 18.6-160000.1.1
  • postgresql18 openSUSE Tumbleweed 18.6-1.1
  • postgresql17 openSUSE Tumbleweed 17.11-1.1

opensuse advisories openSUSE-SU-2026:21702-1openSUSE-SU-2026:21703-1openSUSE-SU-2026:11565-1openSUSE-SU-2026:11555-1

  • postgresql15 Alpine 3.22, Alpine 3.21 15.19-r0
  • postgresql17 Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 17.11-r0
  • postgresql18 Alpine 3.24, Alpine 3.23 18.5-r0

alpine advisories ALPINE-CVE-2026-14681

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-14681 updated cvss 4.2

postgresql: PostgreSQL: Improper enforcement of GSSAPI encryption via direct TLS connection

  • Red Hat Enterprise Linux 9 postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, postgresql-contrib, +4 more Red Hat Enterprise Linux 10 postgresql18
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +2 more Red Hat Enterprise Linux 7 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +3 more Red Hat Enterprise Linux 8 pgaudit, pg_repack, postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, +7 more Red Hat Enterprise Linux 9 postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, postgresql-contrib, +4 more Red Hat Enterprise Linux 10 postgresql16
    not affected: vulnerable code not present
  • Red Hat Hardened Images postgresql17, postgresql18, hi/postgresql
    not affected: component not present
  • Red Hat Self-service automation portal 2 ansible-automation-platform/bootc-automation-portal-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.08% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
OSV 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami postgresql
>=17.0.0, <17.11.0
>=18.0.0, <18.5.0
17.11.0
18.5.0

Affected products

  • n/a PostgreSQL

Classification

Weakness
  • CWE-924 Improper Enforcement of Message Integrity During Transmission in a Communication Channel
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.