CVE-2026-7820

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-7820
Improper restriction of excessive authentication attempts (CWE-307) in pgAdmin 4. pgAdmin enforces MAX_LOGIN_ATTEMPTS only inside its custom /authenticate/login view. Flask-Security's default /login view, which is registered automatically by security.init_app() and is reachable on every server, never consulted the User.locked field: pgAdmin's User model relied on Flask-Security's UserMixin.is_locked() (which always returns 'not locked') and Flask-Login's is_active (which only checks the active column, not locked). An attacker who triggered an account lockout via /authenticate/login could therefore obtain a session by re-submitting valid credentials directly to /login, defeating the brute-force-protection control for accounts using the INTERNAL authentication source. The same bypass also means that login attempts via /login are never rate-limited, so an attacker can perform an unbounded online password-guessing attack against INTERNAL accounts regardless of MAX_LOGIN_ATTEMPTS. Fix overrides User.is_active and User.is_locked() so the locked column is enforced on every authentication path. LDAP, OAuth2, Kerberos, and Webserver users are not reachable by this bypass because they have no local password and are rejected by Flask-Security's LoginForm.validate before the locked check; the lockout itself is also internal-only (the /authenticate/login view filters by auth_source=INTERNAL). This issue affects pgAdmin 4: before 9.15.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/pgadmin-org/pgadmin4/issues/9904 Issue Tracking Patch Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:pgadmin:pgadmin_4:*:*:*:*:*:postgresql:*:*
History

26 May 2026, 12:54

Type Values Removed Values Added
CPE cpe:2.3:a:pgadmin:pgadmin_4:*:*:*:*:*:postgresql:*:*
References () https://github.com/pgadmin-org/pgadmin4/issues/9904 - () https://github.com/pgadmin-org/pgadmin4/issues/9904 - Issue Tracking, Patch, Vendor Advisory
First Time Pgadmin pgadmin 4
Pgadmin

11 May 2026, 17:16

Type Values Removed Values Added
CWE CWE-307

11 May 2026, 16:17

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-11 16:17

Updated : 2026-05-26 12:54

NVD link : CVE-2026-7820

Mitre link : CVE-2026-7820

CVE.ORG link : CVE-2026-7820

JSON object : View

Products Affected

pgadmin

  • pgadmin_4
CWE
CWE-307

Improper Restriction of Excessive Authentication Attempts