CVE-2026-14671: Access of Resource Using Incompatible Type ('Type Confusion') in PostgreSQL
CVE-2026-14671 is a high-severity type confusion vulnerability in the PostgreSQL refint module. It allows an object creator to execute arbitrary code with the privileges of the operating system user running the database. The issue affects multiple PostgreSQL versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. A fix was introduced as part of a non-security bug report that removed the plan cache in the refint module. The vulnerability has a CVSS score of 8.8, indicating a high impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
This vulnerability is a type confusion flaw in the PostgreSQL refint module, which can be exploited by an object creator to execute arbitrary code as the OS user running the database. The fix was implemented by removing the plan cache in the refint module, as reflected in the PostgreSQL git repository. Affected versions include all releases before 18.6, 17.11, 16.15, 15.19, and 14.24. The CVSS 3.1 score is 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating network exploitable with low attack complexity, requiring low privileges but no user interaction, and causing high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows arbitrary code execution with the privileges of the operating system user running PostgreSQL, potentially leading to full compromise of the database server and underlying system. The vulnerability affects confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
A fix is available and has been incorporated in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official fix.
CVE-2026-14671: Access of Resource Using Incompatible Type ('Type Confusion') in PostgreSQL
Description
CVE-2026-14671 is a high-severity type confusion vulnerability in the PostgreSQL refint module. It allows an object creator to execute arbitrary code with the privileges of the operating system user running the database. The issue affects multiple PostgreSQL versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. A fix was introduced as part of a non-security bug report that removed the plan cache in the refint module. The vulnerability has a CVSS score of 8.8, indicating a high impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 8.8high
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 is a type confusion flaw in the PostgreSQL refint module, which can be exploited by an object creator to execute arbitrary code as the OS user running the database. The fix was implemented by removing the plan cache in the refint module, as reflected in the PostgreSQL git repository. Affected versions include all releases before 18.6, 17.11, 16.15, 15.19, and 14.24. The CVSS 3.1 score is 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating network exploitable with low attack complexity, requiring low privileges but no user interaction, and causing high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows arbitrary code execution with the privileges of the operating system user running PostgreSQL, potentially leading to full compromise of the database server and underlying system. The vulnerability affects confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
A fix is available and has been incorporated in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-07-03T20:28:13.192Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc615bf8831d5393e528e
Added to database: 08/13/2026, 13:26:45 UTC
Last enriched: 09/12/2026, 04:46:53 UTC
Last updated: 09/26/2026, 13:47:43 UTC
Views: 33
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.