Improper Type Validation in PostgreSQL Affects Multiple Versions
CVE-2026-2003

4.3MEDIUM

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
12 February 2026

What is CVE-2026-2003?

An issue in PostgreSQL arises from improper validation of the 'oidvector' data type, which can potentially allow database users to access segments of server memory. While the risk of revealing sensitive information is present, it remains unlikely. Affected versions include those before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21, emphasizing the need for immediate updates to ensure system security.

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Affected Version(s)

PostgreSQL 18 < 18.2

PostgreSQL 17 < 17.8

PostgreSQL 16 < 16.12

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The PostgreSQL project thanks Altan Birler for reporting this problem.
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