CVE-2026-7814 pgAdmin 4: Stored XSS via crafted PostgreSQL object names in Browser Tree and Explain Visualizer

Medium 4.8 Published 11 May 2026 Updated 11 May 2026

Attacker can execute arbitrary JavaScript in pgAdmin users' browsers via malicious PostgreSQL object names, potentially leading to session hijacking or data theft.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-7814?

CVE-2026-7814 is a medium-severity cross-site scripting vulnerability in pgadmin.org pgAdmin 4, published on 11 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2026-7814?

3 open source packages ship an affected version, including pgadmin4. It affects 1 product.

Package	Affected	Fixed in
`pgadmin4` PyPI	All versions	`9.15`
`pgadmin4` PyPI	All versions	`9.15`
`pgadmin4` PyPI	All versions	`9.15`

Products include Pgadmin Pgadmin 4.

How do I fix CVE-2026-7814?

Upgrade pgadmin4 to 9.15 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-7814 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7814 exists.

Sources

Also known as GHSA-6p2c-69cv-3fxq, PYSEC-2026-2866.