CVE-2026-50735 Information disclosure in pglogical
A malicious publisher can cause out-of-bounds reads in pglogical subscribers, leaking memory or crashing workers, primarily affecting managed deployments with delegated subscription privileges.
- 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-2026-50735?
CVE-2026-50735 is a medium-severity 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
pglogical's apply worker does not sufficiently validate the length of certain fields in incoming replication protocol messages before copying them, resulting in an out-of-bounds read. A party acting as the publisher for a subscription, for example a non-PostgreSQL endpoint that speaks the pglogical replication protocol, can return crafted messages that cause the subscriber's apply worker to read beyond the bounds of an allocated buffer, disclosing adjacent process memory or crashing the worker. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.
Weakness: CWE-125
Which versions are affected by CVE-2026-50735?
It affects 1 product.
Products include Enterprisedb Pglogical.
How do I fix CVE-2026-50735?
Apply the vendor's patch.
Is CVE-2026-50735 being exploited?
There is no known exploitation of CVE-2026-50735 in the wild and no public exploit code.
Other vulnerabilities in EnterpriseDB pglogical
Sources
Also known as DEBIAN-CVE-2026-50735, ECHO-adab-4650-fa5e, GHSA-jhwv-w4qj-9cmf, UBUNTU-CVE-2026-50735.