CVE-2026-6479
Last modified
CVE-2026-6479 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service. If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
Description
Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service. If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Postgresql | Postgresql | < 14.23 |
| Postgresql | Postgresql | >= 15.0, < 15.18 |
| Postgresql | Postgresql | >= 16.0, < 16.14 |
| Postgresql | Postgresql | >= 17.0, < 17.10 |
| Postgresql | Postgresql | >= 18.0, < 18.4 |
References
- https://www.postgresql.org/support/security/CVE-2026-6479/Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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