CVE-2026-16241 — PostgreSQL ECPG integer underflow can crash the client
Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the …
Published: 2026-08-13 · CVSS: 3.8 · CVSS 3.1
Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the mandatory prefix. The client overwrites a huge memory region with bytes outside attacker knowledge or control. This typically yields a simple SIGSEGV, but rare cases might achieve client-specific integrity impact via the write. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7