CVE-2026-14662
Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. These types are typically sourced from application logic, not taken from the application's user. Hence, application users attacking the database, through the application as a conduit, are unlikely. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Version Information
| Affected branch | Introduced | Fixed In | Fix Published |
|---|---|---|---|
| 14 | — | 14.24 | 2026-08-13 |
| 15 | — | 15.19 | 2026-08-13 |
| 16 | — | 16.15 | 2026-08-13 |
| 17 | — | 17.11 | 2026-08-13 |
| 18 | — | 18.6 | 2026-08-13 |
CVSS 3.0
| Overall Score | 8.8 |
|---|---|
| Component | core server |
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
First published: 2026-08-13
Historical source observations
These dated records preserve the original source claims separately from the reviewed fix list.
center · 2026-10-03 12:08:35.169032+08
- PostgreSQL 18 · Original minor coordinate: 6
- PostgreSQL 17 · Original minor coordinate: 11
- PostgreSQL 16 · Original minor coordinate: 15
- PostgreSQL 15 · Original minor coordinate: 19
- PostgreSQL 14 · Original minor coordinate: 24
pgweb · 2026-10-03 12:08:55.967155+08
- PostgreSQL 18 · Original minor coordinate: 6
- PostgreSQL 17 · Original minor coordinate: 11
- PostgreSQL 16 · Original minor coordinate: 15
- PostgreSQL 15 · Original minor coordinate: 19
- PostgreSQL 14 · Original minor coordinate: 24