CVE-2025-27824 Cross-site scripting in Link iframe formatter
An attacker with content creation privileges can inject malicious scripts via the Link iframe formatter module in Backdrop CMS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27824?
CVE-2025-27824 is a medium-severity cross-site scripting vulnerability in backdropcms Link iframe formatter, published on 7 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An XSS issue was discovered in the Link iframe formatter module before 1.x-1.1.1 for Backdrop CMS. It doesn't sufficiently sanitize input before displaying results to the screen. This vulnerability is mitigated by the fact that an attacker must have the ability to create content containing an iFrame field.
Weakness: CWE-79
Which versions are affected by CVE-2025-27824?
How do I fix CVE-2025-27824?
No fix has been published for CVE-2025-27824 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-2025-27824 being exploited?
There is no known exploitation of CVE-2025-27824 in the wild and no public exploit code.
Sources
Also known as GHSA-xf37-jxxr-pmvg.