PostgreSQL up to 18.6 plperl memory corruption

Summaryinfo

A vulnerability was found in PostgreSQL up to 14.24/15.19/16.15/17.11/18.6. It has been declared as critical. Affected is an unknown function of the component plperl. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2026-116326. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in PostgreSQL up to 14.24/15.19/16.15/17.11/18.6. Affected by this issue is some unknown processing of the component plperl. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Uncaught exceptions in PostgreSQL plperl allow an object creator to cause use of a stale sigjmp_buf, via a tied Perl object, or a Perl object whose overloaded conversion throws while plperl is handling another error. We have not ruled out arbitrary code execution on some platform. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

The advisory is available at postgresql.org. This vulnerability is handled as CVE-2026-116326 since 10/26/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 14.25, 15.20, 16.16, 17.12 or 18.7 eliminates this vulnerability.

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Productinfo

Type

• Database Software

Name

• PostgreSQL

Version

• 14.0
• 14.1
• 14.2
• 14.3
• 14.4
• 14.5
• 14.6
• 14.7
• 14.8
• 14.9
• 14.10
• 14.11
• 14.12
• 14.13
• 14.14
• 14.15
• 14.16
• 14.17
• 14.18
• 14.19
• 14.20
• 14.21
• 14.22
• 14.23
• 14.24
• 15.0
• 15.1
• 15.2
• 15.3
• 15.4
• 15.5
• 15.6
• 15.7
• 15.8
• 15.9
• 15.10
• 15.11
• 15.12
• 15.13
• 15.14
• 15.15
• 15.16
• 15.17
• 15.18
• 15.19
• 16.0
• 16.1
• 16.2
• 16.3
• 16.4
• 16.5
• 16.6
• 16.7
• 16.8
• 16.9
• 16.10
• 16.11
• 16.12
• 16.13
• 16.14
• 16.15
• 17.0
• 17.1
• 17.2
• 17.3
• 17.4
• 17.5
• 17.6
• 17.7
• 17.8
• 17.9
• 17.10
• 17.11
• 18.0
• 18.1
• 18.2
• 18.3
• 18.4
• 18.5
• 18.6

License

• open-source

Website

• Product: https://www.postgresql.org/

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