CVE-2026-14670: Heap-based Buffer Overflow in PostgreSQL
CVE-2026-14670 is a heap-based buffer overflow vulnerability in the PostgreSQL plperl extension. It allows a function owner to execute arbitrary code as the operating system user running the database by exploiting a crafted function body that returns a tied hash. This vulnerability affects multiple PostgreSQL versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. The vulnerability has a high severity with a CVSS score of 8.8.
AI Analysis
Technical Summary
This vulnerability is a heap buffer overflow in PostgreSQL's plperl return of a tied hash. It enables the function owner to execute arbitrary code with the privileges of the OS user running the database by crafting a malicious function body. Affected versions include all releases before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24. The CVSS 3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, requiring privileges, no user interaction, and impacts confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows arbitrary code execution as the operating system user running the PostgreSQL database. This can lead to full compromise of the database server and potentially the underlying system, affecting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
Fixed versions are available: PostgreSQL 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 information indicates that temporary mitigations or workarounds exist. Patch status is confirmed by the version boundaries provided.
CVE-2026-14670: Heap-based Buffer Overflow in PostgreSQL
Description
CVE-2026-14670 is a heap-based buffer overflow vulnerability in the PostgreSQL plperl extension. It allows a function owner to execute arbitrary code as the operating system user running the database by exploiting a crafted function body that returns a tied hash. This vulnerability affects multiple PostgreSQL versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. The vulnerability has a high severity with a CVSS score of 8.8.
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 heap buffer overflow in PostgreSQL's plperl return of a tied hash. It enables the function owner to execute arbitrary code with the privileges of the OS user running the database by crafting a malicious function body. Affected versions include all releases before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24. The CVSS 3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, requiring privileges, no user interaction, and impacts confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows arbitrary code execution as the operating system user running the PostgreSQL database. This can lead to full compromise of the database server and potentially the underlying system, affecting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
Fixed versions are available: PostgreSQL 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 information indicates that temporary mitigations or workarounds exist. Patch status is confirmed by the version boundaries provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-07-03T20:28:12.637Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc615bf8831d5393e528b
Added to database: 08/13/2026, 13:26:45 UTC
Last enriched: 09/12/2026, 04:46:58 UTC
Last updated: 09/28/2026, 13:47:42 UTC
Views: 47
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