CVE-2026-39336 ChurchCRM has Stored XSS from unescaped config values in HTML attributes
Attackers can inject malicious scripts via unescaped configuration values in ChurchCRM, potentially compromising admin accounts.
- 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
- None listed
What is CVE-2026-39336?
CVE-2026-39336 is a medium-severity cross-site scripting vulnerability in Churchcrm Churchcrm, published on 7 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
ChurchCRM is an open-source church management system. Prior to 7.1.0, a stored cross-site scripting issue affects the Directory Reports form fields set from config, Person editor defaults rendered into address fields, and external self-registration form defaults. This is primarily an admin-to-admin stored XSS path where writable configuration fields are abused. This vulnerability is fixed in 7.1.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-39336?
It affects 1 product.
Products include Churchcrm Churchcrm.
How do I fix CVE-2026-39336?
No fix has been published for CVE-2026-39336 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-2026-39336 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-39336 exists.
Other vulnerabilities in Churchcrm Churchcrm
Sources
Also known as GHSA-r8cp-gg58-2r2r.