CVE-2026-1135 itsourcecode Society Management System activity.php cross site scripting

Medium 5.3 Published Updated

Remote attackers can inject malicious scripts via the Title argument in activity.php, potentially compromising user sessions or executing code.

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-2026-1135?

CVE-2026-1135 is a medium-severity cross-site scripting vulnerability in itsourcecode Society Management System, published on 19 Jan 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 security flaw has been discovered in itsourcecode Society Management System 1.0. This impacts an unknown function of the file /admin/activity.php. The manipulation of the argument Title results in cross site scripting. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2026-1135?

It affects 1 product.

Products include Angeljudesuarez Society Management System.

How do I fix CVE-2026-1135?

No fix has been published for CVE-2026-1135 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-2026-1135 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1135 exists.

Sources

Also known as GHSA-5649-r252-h649.

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