CVE-2026-50738 Use after free in pglogical
A use-after-free in pglogical allows low-privileged users to crash replication workers or potentially execute remote code via worker lifecycle manipulation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-50738?
CVE-2026-50738 is a high-severity use after free vulnerability in EnterpriseDB pglogical, published on 28 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-416
Which versions are affected by CVE-2026-50738?
It affects 1 product.
Products include Enterprisedb Pglogical.
How do I fix CVE-2026-50738?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-50738 being exploited?
There is no known exploitation of CVE-2026-50738 in the wild and no public exploit code.
Other vulnerabilities in EnterpriseDB pglogical
Sources
Also known as DEBIAN-CVE-2026-50738, ECHO-af9c-763e-6a2b, GHSA-7pcx-4vjw-f9pr, UBUNTU-CVE-2026-50738.