CVE-2026-16241 — PostgreSQL ECPG integer underflow can crash the client

Affected: PostgreSQL

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.

USN-8653-1 — postgresql-14, postgresql-16, postgresql-18 vulnerabilities

Affected: Ubuntu:22.04:LTS: postgresql-14, Ubuntu:24.04:LTS: postgresql-16, Ubuntu:26.04:LTS: postgresql-18

It was discovered that PostgreSQL incorrectly handled COPY FROM STDIN when an early failure occurred. An authenticated user could possibly use this issue to execute arbitrary SQL commands. (CVE-2026-6464)

It was discovered that PostgreSQL incorrectly reset extended statistics ownership during ALTER TABLE ALTER TYPE operations. An attacker could possibly use this issue to obtain sensitive information or gain unintended privileges. (CVE-2026-6469)

It was discovered that PostgreSQL failed to check the USAGE privilege on types. An authenticated user could possibly use this issue to obtain sensitive information. (CVE-2026-6470)

It was discovered that PostgreSQL logical decoding could load arbitrary shared libraries. An authenticated user could possibly use this issue to execute arbitrary code. (CVE-2026-6471)

It was discovered that PostgreSQL had integer wraparound issues in tsvector and tsquery allocations. An authenticated user could possibly use this issue to execute arbitrary code. (CVE-2026-14662)

It was discovered that PostgreSQL pgcrypto silently used cleartext when OpenSSL-disabled ciphers were requested. An authenticated user could possibly use this issue to obtain sensitive information. (CVE-2026-14663)

It was discovered that PostgreSQL had a heap buffer overflow in regular expression processing. An authenticated user could possibly use this issue to execute arbitrary code. (CVE-2026-14664)

It was discovered that PostgreSQL row security policies were not properly…

Most recent entries from all

CVE-2026-16241 — PostgreSQL ECPG integer underflow can crash the client

USN-8653-1 — postgresql-14, postgresql-16, postgresql-18 vulnerabilities