CVE-2025-53504 Cross-site scripting in Group-Office
Attackers can execute arbitrary scripts in user browsers via XSS in Group-Office, requiring an upgrade to secure versions.
- 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-2025-53504?
CVE-2025-53504 is a medium-severity cross-site scripting vulnerability in Intermesh BV Group-Office, published on 21 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Group-Office versions prior to 6.8.119 and prior to 25.0.20 provided by Intermesh BV contain a cross-site scripting vulnerability. If this vulnerability is exploited, an arbitrary script may be executed in the user's web browser.
Weakness: CWE-79
Which versions are affected by CVE-2025-53504?
It affects 1 product.
Products include Group-Office Group Office.
How do I fix CVE-2025-53504?
No fix has been published for CVE-2025-53504 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-2025-53504 being exploited?
There is no known exploitation of CVE-2025-53504 in the wild and no public exploit code.
Other vulnerabilities in Intermesh BV Group-Office
- CVE-2026-25512 Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler
- CVE-2026-25134 Group-Office Argument Injection in MaintenanceController::actionZipLanguage
- CVE-2025-63406 Code injection in n/a
- CVE-2026-25511 Group-Office is vulnerable to SSRF and File Read in WOPI service discovery
- CVE-2023-46730 Server-Side Request Forgery in groupoffice
Sources
Also known as GHSA-5j42-cmx3-349c.