CVE-2026-7501 LinkStackOrg LinkStack UserController.php editPage cross site scripting
Remote attackers can inject malicious scripts via the pageDescription field in LinkStack, potentially leading to code execution or 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-2026-7501?
CVE-2026-7501 is a medium-severity cross-site scripting vulnerability in LinkStackOrg LinkStack, published on 30 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
A weakness has been identified in LinkStackOrg LinkStack up to 4.8.6. Impacted is the function editPage of the file app/Http/Controllers/UserController.php. Executing a manipulation of the argument pageDescription can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through a pull request but has not reacted yet.
Which versions are affected by CVE-2026-7501?
How do I fix CVE-2026-7501?
No fix has been published for CVE-2026-7501 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-2026-7501 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7501 exists.
Sources
Also known as GHSA-3v6f-p2hc-xq2j.