CVE-2026-14673: Untrusted Search Path in PostgreSQL
CVE-2026-14673 is a low-severity vulnerability in PostgreSQL affecting certain minor versions of major releases 14, 15, 16, and 18. It involves an untrusted search path issue in the amcheck extension, where a user with EXECUTE privilege on the amcheck function can execute arbitrary functions as owners of expression indexes by manipulating the search path. PostgreSQL 17 is not affected.
AI Analysis
Technical Summary
This vulnerability arises from an untrusted search path in the PostgreSQL amcheck extension. A grantee with EXECUTE privilege on the amcheck function can set a hostile search path before invoking the function, enabling execution of arbitrary functions with the privileges of expression index owners that depend on the search path. The issue affects PostgreSQL versions 14 prior to 14.24, 15 prior to 15.19, 16 prior to 16.15, and 18 prior to 18.6. PostgreSQL 17 is unaffected.
Potential Impact
An attacker with EXECUTE privilege on the amcheck function can leverage this vulnerability to execute arbitrary functions with the privileges of expression index owners, potentially leading to unauthorized actions or privilege escalation within the database context. The CVSS score of 3.8 reflects low severity with limited confidentiality and integrity impact and no availability impact.
Mitigation Recommendations
A fix is available in PostgreSQL versions 14.24, 15.19, 16.15, and 18.6. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated.
CVE-2026-14673: Untrusted Search Path in PostgreSQL
Description
CVE-2026-14673 is a low-severity vulnerability in PostgreSQL affecting certain minor versions of major releases 14, 15, 16, and 18. It involves an untrusted search path issue in the amcheck extension, where a user with EXECUTE privilege on the amcheck function can execute arbitrary functions as owners of expression indexes by manipulating the search path. PostgreSQL 17 is not affected.
CVSS v3.1
Score 3.8low
Affected software
PostgreSQL
pkg:deb/postgresql/postgresqlRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from an untrusted search path in the PostgreSQL amcheck extension. A grantee with EXECUTE privilege on the amcheck function can set a hostile search path before invoking the function, enabling execution of arbitrary functions with the privileges of expression index owners that depend on the search path. The issue affects PostgreSQL versions 14 prior to 14.24, 15 prior to 15.19, 16 prior to 16.15, and 18 prior to 18.6. PostgreSQL 17 is unaffected.
Potential Impact
An attacker with EXECUTE privilege on the amcheck function can leverage this vulnerability to execute arbitrary functions with the privileges of expression index owners, potentially leading to unauthorized actions or privilege escalation within the database context. The CVSS score of 3.8 reflects low severity with limited confidentiality and integrity impact and no availability impact.
Mitigation Recommendations
A fix is available in PostgreSQL versions 14.24, 15.19, 16.15, and 18.6. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-07-03T20:28:14.306Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc617bf8831d5393e539e
Added to database: 08/13/2026, 13:26:47 UTC
Last enriched: 09/13/2026, 13:04:42 UTC
Last updated: 09/28/2026, 13:47:42 UTC
Views: 41
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.