CVE-2026-3403 PHPGurukul Student Record Management System edit-subject.php cross site scripting

Medium 4.8 Published Updated

Remote attackers can inject malicious scripts via the Subject 1 parameter in edit-subject.php, 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-2026-3403?

CVE-2026-3403 is a medium-severity cross-site scripting vulnerability in PHPGurukul Student Record Management System, published on 2 Mar 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 PHPGurukul Student Record Management System 1.0. This issue affects some unknown processing of the file /edit-subject.php. Performing a manipulation of the argument Subject 1 results in cross site scripting. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2026-3403?

It affects 1 product.

Products include Phpgurukul Student Record System.

How do I fix CVE-2026-3403?

No fix has been published for CVE-2026-3403 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-2026-3403 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3403 exists.

Sources

Also known as GHSA-j9fg-w4w9-vgr8.

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