Use After Free Vulnerability in PostgreSQL plperl
CVE-2026-116319

8.8HIGH

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
12 November 2026

What is CVE-2026-116319?

The use after free vulnerability in PostgreSQL's plperl extension allows an object creator to exploit reentrant return_next() calls. This exploitation can lead to arbitrary code execution as the operating system user running the database, compromising the security of the system. Users are strongly advised to upgrade to the latest versions to mitigate this risk.

Affected Version(s)

PostgreSQL 18 < 18.7

PostgreSQL 17 < 17.12

PostgreSQL 16 < 16.16

References

https://www.postgresql.org/support/security/CVE-2026-116319/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The PostgreSQL project thanks Anthropic OSS program for reporting this problem.
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