CVE-2026-2003
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Version Information
| Affected branch | Introduced | Fixed In | Fix Published |
|---|---|---|---|
| 14 | — | 14.21 | 2026-02-12 |
| 15 | — | 15.16 | 2026-02-12 |
| 16 | — | 16.12 | 2026-02-12 |
| 17 | — | 17.8 | 2026-02-12 |
| 18 | — | 18.2 | 2026-02-12 |
CVSS 3.0
| Overall Score | 4.3 |
|---|---|
| Component | core server |
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
First published: 2026-02-12
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: 2
- PostgreSQL 17 · Original minor coordinate: 8
- PostgreSQL 16 · Original minor coordinate: 12
- PostgreSQL 15 · Original minor coordinate: 16
- PostgreSQL 14 · Original minor coordinate: 21
pgweb · 2026-10-03 12:08:55.967155+08
- PostgreSQL 18 · Original minor coordinate: 2
- PostgreSQL 17 · Original minor coordinate: 8
- PostgreSQL 16 · Original minor coordinate: 12
- PostgreSQL 15 · Original minor coordinate: 16
- PostgreSQL 14 · Original minor coordinate: 21