Uncontrolled Recursion Affecting libpq package, versions [14.2,14.23)[15.3,15.18)[16.8,16.14)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-LIBPQ-16691585
- published14 May 2026
- disclosed14 May 2026
- creditCalif.io
Introduced: 14 May 2026
CVE-2026-6479 (opens in a new tab)How to fix?
Upgrade libpq to version 14.23, 15.18, 16.14 or higher.
Overview
Affected versions of this package are vulnerable to Uncontrolled Recursion through the SSL or GSS negotiation process. An attacker can cause the service to become unresponsive by triggering uncontrolled recursion when connecting to an AF_UNIX socket. If both SSL and GSS are disabled, the same effect can be achieved via access to a TCP socket.
Workaround
This vulnerability can be mitigated by enabling SSL and/or GSS, or by disabling unix_socket_directories.