# CVE-2026-50738: pglogical: A use-after-free condition exists in pglogical's worker signaling code, where a worker structure can be dereferenced...

CVE-2026-50738 is fixed in pglogical on 1 platform by DEBIAN-CVE-2026-50738 (version 2.4.8-1), released August 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-50738
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0051
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 28, 2026

## Description

A use-after-free condition exists in pglogical's worker signaling code, where a worker structure can be dereferenced after the underlying slot has been freed or recycled during normal worker lifecycle events. The condition is reachable during normal replication operation, including by a low-privileged user able to influence worker start, stop, and restart timing through permitted pglogical operations. In the typical case the condition crashes replication workers, causing an availability impact. In the worst case a use-after-free in a PostgreSQL backend can be leveraged as a remote code execution primitive at the privilege of that backend.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | pglogical Debian 14 | 2.4.8-1 | [DEBIAN-CVE-2026-50738](https://patchblox.com/security/data/fix/linux/debian-cve-2026-50738.md) | Aug 1, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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