CVE-2026-14679

PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory

State: Published
Severity: 8.2 High
Published: Aug 13, 2026
Updated: Aug 29, 2026
Reserved: Jul 3, 2026

Description

Stack buffer overflow in PostgreSQL argument name matching allows an object creator to achieve unknown impacts via OUT parameter count. The attack can write only 0x0 and 0x1 bytes. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H	PostgreSQL

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
PostgreSQLn/a	18 to before 18.6Affected 17 to before 17.11Affected 16 to before 16.15Affected 15 to before 15.19Affected before 14.24Affected

References

https://www.postgresql.org/support/security/CVE-2026-14679/

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