CVE-2026-14677
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Postgresql
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-190Integer overflow
How to fix
Update
- postgresql postgresql14.24, 15.19, 16.15, 17.11, 18.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| postgresql postgresql | 14.0 ≤ v < 14.24, 15.0 ≤ v < 15.19, 16.0 ≤ v < 16.15, 17.0 ≤ v < 17.11, 18.0 ≤ v < 18.5 | 14.24, 15.19, 16.15, 17.11, 18.5 |
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