CVE-2025-12764: 
Python vulnerability analysis and mitigation

pgAdmin version 9.9 and earlier contains an LDAP injection vulnerability (CVE-2025-12764) in its LDAP authentication flow. The vulnerability was discovered by Arad Inbar and was publicly disclosed on November 5, 2025. The issue affects the LDAP authentication component of pgAdmin when processing user login credentials (PostgreSQL).

The vulnerability stems from improper input validation in the LDAP authentication flow where the username from the login form is inserted into the LDAP search filter without proper escaping. This allows special LDAP characters to be interpreted as LDAP syntax rather than literals. The vulnerability has been assigned a CVSS v3.1 base score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. The issue has been classified as CWE-90: Improper Neutralization of Special Elements used in an LDAP Query (PostgreSQL).

When exploited, this vulnerability can lead to a Denial of Service (DoS) condition. An attacker can input special characters (such as *) in the username field, causing the Directory Controller (DC)/LDAP server and the client to process an unusual amount of data, potentially overwhelming system resources (PostgreSQL).

The vulnerability affects pgAdmin versions 9.9 and earlier. Users should upgrade to newer versions once available. The issue has been tracked for resolution in the upcoming version 9.10 milestone (PostgreSQL).