pgAdmin 4: Stored cross-site scripting (XSS) vulnerability in Browser Tree and Explain Visualizer modules
Date: 2026-05
Affected: pip/pgadmin4
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-7814
CWE: CWE-79
CVSS: 4.8 (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N)

Stored cross-site scripting (XSS) vulnerability in pgAdmin 4 Browser Tree and Explain Visualizer modules. User-controlled PostgreSQL object names (database, schema, table, column, etc.) were assigned to DOM elements via innerHTML, allowing crafted object names containing HTML markup to execute attacker-supplied JavaScript in the browser of any pgAdmin user who navigated to or executed EXPLAIN over the malicious object. Fix replaces innerHTML with textContent. This issue affects pgAdmin 4: before 9.15.


Mitigations:

Architectural layers (MAESTRO):