PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory (CVE-2026-14679)
A stack buffer overflow vulnerability exists in PostgreSQL's argument name matching functionality. This flaw allows an object creator to write specific bytes (0x0 and 0x1) to server memory via the OUT parameter count, potentially leading to unknown impacts. Multiple PostgreSQL versions prior to 14.24, 15.19, 16.15, 17.11, and 18.6 are affected. A patch is available to address this issue.
AI Analysis
Technical Summary
CVE-2026-14679 is a stack buffer overflow vulnerability in PostgreSQL related to argument name matching. The vulnerability permits an attacker with object creation privileges to write bytes 0x0 and 0x1 to server memory by manipulating the OUT parameter count. The exact impact of this memory corruption is unspecified. Affected versions include all releases before 14.24, 15.19, 16.15, 17.11, and 18.6. The vulnerability is classified under CWE-121 (Stack-based Buffer Overflow). A patch is available to remediate this issue.
Potential Impact
The vulnerability allows controlled writes of bytes 0x0 and 0x1 to server memory, which could lead to memory corruption and potentially unknown impacts on the server's operation or security. The exact consequences are not detailed in the available data. No known exploits in the wild have been reported.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade PostgreSQL to versions 14.24, 15.19, 16.15, 17.11, 18.6 or later to mitigate this issue. No additional mitigation steps are indicated by the vendor advisory.
PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory (CVE-2026-14679)
Description
A stack buffer overflow vulnerability exists in PostgreSQL's argument name matching functionality. This flaw allows an object creator to write specific bytes (0x0 and 0x1) to server memory via the OUT parameter count, potentially leading to unknown impacts. Multiple PostgreSQL versions prior to 14.24, 15.19, 16.15, 17.11, and 18.6 are affected. A patch is available to address this issue.
Affected software
pkg:deb/postgresql/postgresqlRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-14679 is a stack buffer overflow vulnerability in PostgreSQL related to argument name matching. The vulnerability permits an attacker with object creation privileges to write bytes 0x0 and 0x1 to server memory by manipulating the OUT parameter count. The exact impact of this memory corruption is unspecified. Affected versions include all releases before 14.24, 15.19, 16.15, 17.11, and 18.6. The vulnerability is classified under CWE-121 (Stack-based Buffer Overflow). A patch is available to remediate this issue.
Potential Impact
The vulnerability allows controlled writes of bytes 0x0 and 0x1 to server memory, which could lead to memory corruption and potentially unknown impacts on the server's operation or security. The exact consequences are not detailed in the available data. No known exploits in the wild have been reported.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade PostgreSQL to versions 14.24, 15.19, 16.15, 17.11, 18.6 or later to mitigate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mpj9-cx22-xp87
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-14679"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7e0366bf8831d5398f869d
Added to database: 08/13/2026, 17:48:22 UTC
Last enriched: 09/08/2026, 15:14:51 UTC
Last updated: 09/26/2026, 13:47:43 UTC
Views: 47
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