Critical Security Update for pg_repack and Related Packages in Red Hat Enterprise Linux 9

pg_repack Updated 20 Oct 2026

Summary

20/10/2026

Disclosed on

N/A

Severity

Yes i

Fix available

High

Severity

8.8

CVSS Score

RHSA-2026:85791: Red Hat Security Advisory: postgresql:16 security update. Affects pg_repack versions < 0:1.5.1-1.module+el9.8.0+24090+8f0ee565. Fixed in 0:1.5.1-1.module+el9.8.0+24090+8f0ee565. How to fix ↓

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Background

pg_repack is a PostgreSQL extension that allows for the reorganization of tables and indexes without requiring a lock on the database. It is widely used for maintaining database performance and efficiency. This advisory addresses a critical vulnerability affecting pg_repack and several related packages in Red Hat Enterprise Linux 9, which could potentially compromise the integrity and availability of the database.

Vulnerability Detail

The vulnerability, identified as CVE-2026-103484, arises from inadequate input validation in the affected packages. An attacker could exploit this vulnerability to execute arbitrary code, leading to unauthorized access to sensitive data or a complete system compromise. The severity of this vulnerability is underscored by its CVSS score of 8.8, indicating a high risk to systems that utilize these packages.

How To Fix

Minimum fixed version

0:1.5.1-1.module+el9.8.0+24090+8f0ee565

This is the first release that contains the fix.

sudo dnf update pg_repack

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Workaround

As a temporary workaround, users are advised to limit access to the affected packages and monitor for any suspicious activity until the packages can be updated. Additionally, disabling the functionality provided by these packages may mitigate the risk until a patch is applied.

Conclusion

The vulnerability identified as CVE-2026-103484 poses a significant risk to users of pg_repack and related packages in Red Hat Enterprise Linux 9. It is crucial to apply the necessary updates to mitigate the risk and ensure the security of your systems.

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