CVE-2026-5010 Reflected Cross-Site Scripting (XSS) in Sanoma’s Clickedu
Attackers can execute JavaScript in victims' browsers via malicious URLs in Clickedu, potentially stealing session cookies or performing unauthorized actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-5010?
CVE-2026-5010 is a medium-severity cross-site scripting vulnerability in Sanoma Clickedu, published on 27 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A reflected Cross-Site Scripting (XSS) vulnerability has been discovered in Clickedu. This vulnerability allows an attacker to execute JavaScript code in the victim’s browser by sending them a malicious URL using the endpoint “/user.php/”. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on the user’s behalf.
Weakness: CWE-79
Which versions are affected by CVE-2026-5010?
How do I fix CVE-2026-5010?
No fix has been published for CVE-2026-5010 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-2026-5010 being exploited?
There is no known exploitation of CVE-2026-5010 in the wild and no public exploit code.
Sources
Also known as GHSA-jcp9-3x5h-m222.