CVE-2026-92871: Pgpool-II NULL pointer dereference in watchdog

CVE-2026-92871 · Severity: high · CVSS 7.5 · Published 2026-09-30

Pgpool-II is a middleware that manages PostgreSQL database clustering and failover. A NULL pointer dereference vulnerability in its watchdog authentication mechanism allows an unauthenticated attacker to crash the watchdog process by sending specially crafted messages, causing loss of high-availability protection and potential service outages.

Technologies: Pgpool Global Development Group Pgpool-II. Vendors: Pgpool Global Development Group.

Quick answers

Is CVE-2026-92871 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-92871 being exploited in the wild.
How severe is CVE-2026-92871?
High severity, with a CVSS score of 7.5, published 30 September 2026.
Which products and versions are affected?
Pgpool Global Development Group Pgpool-II 3.5 through 4.7.2; fixed in 4.3.21, 4.4.18, 4.5.13, 4.6.8, 4.7.3.
Is there a fix for CVE-2026-92871?
A patch was published on 2026-09-29. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-92871 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-92871?
Check whether you run Pgpool Global Development Group Pgpool-II 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

CVE-2026-92871 is a NULL pointer dereference (CWE-476) in Pgpool-II's watchdog inter-node authentication. When an authentication key is configured, malformed watchdog messages that omit authentication information trigger the defect, allowing unauthenticated attackers on the network to crash the watchdog process. A fix is available in patched versions.

Affected products

  • Pgpool Global Development Group Pgpool-II 3.5 through 4.7.2; fixed in 4.3.21, 4.4.18, 4.5.13, 4.6.8, 4.7.3

Timeline

  • 2026-09-29: disclosed
  • 2026-09-29: patched

References

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