Use After Free Vulnerability in PostgreSQL by PostgreSQL Global Development Group
CVE-2026-116310

4.3MEDIUM

Key Information:

Vendor

PostgreSQL Global Development Group

Status
Postgresql
Vendor
CVE Published:
12 November 2026

What is CVE-2026-116310?

A use after free vulnerability has been identified in PostgreSQL, specifically related to error reporting during the COPY FROM operation. This issue allows database users to potentially disclose sensitive portions of server memory when longer input rows are processed following conversion errors that are ignored or nullified. The vulnerability affects PostgreSQL versions 18 and 17, specifically minor versions prior to 18.7 and 17.12. Versions prior to PostgreSQL 17 remain unaffected, making it critical for users of the affected versions to apply necessary updates and patches.

Affected Version(s)

PostgreSQL 18 < 18.7

PostgreSQL 17 < 17.12

References

https://www.postgresql.org/support/security/CVE-2026-116310/

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 안지용 for reporting this problem.
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