PostgreSQL <18.5 ArgNameMatch Stack Buffer Overflow via OUT Param Count
CVE-2026-14679 Published on August 13, 2026
PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory
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 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-14679 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-14679
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