# CVE-2026-50735: EnterpriseDB pglogical out-of-bounds read in apply worker

Source: https://junglewise.ai/threats/cve-2026-50735-enterprisedb-pglogical-out-of-bounds-read-in-apply-worker  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-28. Updated: 2026-07-28  
License: CC BY 4.0 with a link back

CVE-2026-50735 · Severity: info · CVSS 6.1 · Published 2026-07-28

pglogical is a tool used for replicating data between PostgreSQL databases. A vulnerability in its replication worker allows a malicious or compromised data source to send specially crafted messages that can crash the receiving database or expose sensitive information from its memory. While typically requiring high-level administrative access to set up, this issue is particularly significant for managed database environments where lower-level users might be granted permission to configure data subscriptions.

Technologies: [EnterpriseDB Pglogical](https://junglewise.ai/threats/technologies/pglogical). Vendors: [EnterpriseDB](https://junglewise.ai/threats/vendors/enterprisedb).

## Quick answers

**Is CVE-2026-50735 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-50735 being exploited in the wild.

**How severe is CVE-2026-50735?** Informational severity, with a CVSS score of 6.1, published 28 July 2026.

**Which products and versions are affected?** EnterpriseDB Pglogical 2.x before 2.4.8.

**Is there a fix for CVE-2026-50735?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-50735 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-50735?** Check whether you run EnterpriseDB Pglogical at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An out-of-bounds read vulnerability (CWE-125) exists in the pglogical apply worker due to insufficient validation of field lengths in incoming replication protocol messages. An attacker acting as a replication publisher can send crafted messages that cause the subscriber's apply worker to read beyond allocated buffer bounds. This can lead to the disclosure of adjacent process memory or a denial-of-service condition via worker crashes. Exploitation requires the attacker to control a replication endpoint and have the privileges necessary to direct a subscription to that endpoint (typically superuser, or delegated subscription roles in managed environments). The issue is fixed in pglogical version 2.4.8.

## Affected products

- EnterpriseDB pglogical 2.x before 2.4.8

## Timeline

- 2026-07-28: disclosed
- 2026-07-28: advisory

## References

- [https://www.enterprisedb.com/docs/security/advisories/cve202650735/](https://www.enterprisedb.com/docs/security/advisories/cve202650735/)

## Related threats

- [EnterpriseDB pglogical use-after-free in worker signaling code](https://junglewise.ai/threats/cve-2026-50738-enterprisedb-pglogical-use-after-free-in-worker-signaling-code)
- [EnterpriseDB pglogical superuser privilege escalation via default expressions](https://junglewise.ai/threats/cve-2026-50737-enterprisedb-pglogical-superuser-privilege-escalation-via-default)
- [EnterpriseDB pglogical privilege escalation in queue mechanism](https://junglewise.ai/threats/cve-2026-50736-enterprisedb-pglogical-privilege-escalation-in-queue-mechanism)