CVE-2026-14681
MEDIUMDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 0% of all known CVEs.
References
Related Vulnerabilities
Other CWE-924 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-3596 | Critical | 9.0 | 15% | - | Fix |
| CVE-2018-14526 | Medium | 6.5 | 1.1% | - | Fix |
| CVE-2021-21390 | Medium | 6.5 | 0.9% | - | Fix |
| CVE-2022-3166 | High | 7.5 | 0.7% | - | - |
| CVE-2021-34793 | High | 8.6 | 0.7% | - | Fix |
| CVE-2021-3716 | Low | 3.1 | 0.6% | - | Fix |
Common questions
How do I fix CVE-2026-14681?
Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2026-14681 being actively exploited?
Not that we know of. CVE-2026-14681 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.07% is the estimated probability that it will be exploited in the next 30 days. That is higher than 0% of all scored CVEs.
How severe is CVE-2026-14681?
CVE-2026-14681 has a CVSS v3 base score of 4.2, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-14681 affect?
Published advisories record a fix for postgresql-14 (Ubuntu), postgresql-16 (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-29.