CVE-2026-14677 — PostgreSQL 32-bit pltcl and plperl undersize allocations, via integer wraparound

CVE-2026-14677

PostgreSQL 32-bit pltcl and plperl undersize allocations, via integer wraparound PUBLISHED

Description (CNA)

Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Affected (CNA)

Vendor / product	Versions
n/a / PostgreSQL	affected 18 before 18.6; affected 17 before 17.11; affected 16 before 16.15; affected 15 before 15.19; affected 0 before 14.24

CWE

CWE-190

References

https://www.postgresql.org/support/security/CVE-2026-14677/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.