CVE-2026-35575 ChurchCRM has Stored XSS in Group Name

High 8.0 Published Updated

Attackers with group-creation privileges can inject malicious scripts that steal administrator session cookies, leading to account takeover.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-35575?

CVE-2026-35575 is a high-severity cross-site scripting vulnerability in Churchcrm Churchcrm, published on 7 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

ChurchCRM is an open-source church management system. Prior to 6.5.3, a Stored Cross-Site Scripting (Stored XSS) vulnerability in the admin panel’s group-creation feature allows any user with group-creation privileges to inject malicious JavaScript that executes automatically when an administrator views the page. This enables attackers to steal the administrator’s session cookies, potentially leading to full administrative account takeover. This vulnerability is fixed in 6.5.3.

Weakness: CWE-79, CWE-1004

Which versions are affected by CVE-2026-35575?

It affects 1 product.

Products include Churchcrm Churchcrm.

How do I fix CVE-2026-35575?

No fix has been published for CVE-2026-35575 yet. Limit exposure of the affected software until one is available.

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-2026-35575 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35575 exists.

All Churchcrm Churchcrm vulnerabilities

Sources

Also known as GHSA-gc8q-2gw7-qj7w.

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