CVE-2026-7012 MaxSite CMS Redirect Plugin cross site scripting
Remote attackers can execute arbitrary scripts via the Redirect Plugin due to missing output filtering, potentially compromising user sessions.
- 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-2026-7012?
CVE-2026-7012 is a medium-severity cross-site scripting vulnerability in MaxSite CMS, published on 26 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A vulnerability was detected in MaxSite CMS up to 109.3. This affects an unknown part of the component Redirect Plugin. The manipulation of the argument f_all/f_all404 results in cross site scripting. The attack can be launched remotely. The exploit is now public and may be used. Upgrading to version 109.4 is able to mitigate this issue. The patch is identified as 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7. You should upgrade the affected component. The vendor was informed early about this issue. They classify it as a "Self-XSS". They deployed a countermeasure: "Nevertheless, we consider this a violation of secure coding standards. The lack of filtering via `htmlspecialchars()` has already been fixed in the latest patch to prevent incorrect data display."
Which versions are affected by CVE-2026-7012?
How do I fix CVE-2026-7012?
No fix has been published for CVE-2026-7012 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-2026-7012 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7012 exists.
Sources
Also known as GHSA-23rr-8ff7-qf8m.