CVE-2026-6479
Title: Uncontrolled Recursion in PostgreSQL SSL/GSS Negotiation
DoS
Proof Of Concept
No public PoC currently indexed for CVE-2026-6479.
CWE Category
CWE-674
Published Date
May 14, 2026
Modified Date
May 18, 2026
Exploit Status
Not Found
Score
7.5
CVSS v3.1
Exploit Probability (EPSS)
0.47%
Vulnerability Summary
CVE-2026-6479: 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.
Impacted Vendors
Reference Links
CVSS v3.1
Source Entity
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
Severity
HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Associated Attack Patterns (CAPEC)
Total: PatternsNo specific attack patterns mapped.
Likelihood
Severity
Page /
CVE-2026-6479 Exploits & PoCs (Proof Of Concept)
No public PoCs found in our database for this CVE.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
Attack Vector Matrix
Access Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
CVSS Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Stack
No specific products linked.