CVE-2026-2003 PUBLISHED

PostgreSQL oidvector discloses a few bytes of memory

Assigner: PostgreSQL
Reserved: 05.02.2026 Published: 12.02.2026 Updated: 12.02.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	n/a
Product	PostgreSQL
Versions	Default: unaffected affected from 18 to 18.2 (excl.) affected from 17 to 17.8 (excl.) affected from 16 to 16.12 (excl.) affected from 15 to 15.16 (excl.) affected from 0 to 14.21 (excl.)

Credits

The PostgreSQL project thanks Altan Birler for reporting this problem.

References

https://www.postgresql.org/support/security/CVE-2026-2003/

Problem Types

Improper Validation of Specified Type of Input CWE