CVE-2026-4557 code-projects Exam Form Submission update_s1.php cross site scripting
Remote attackers can inject malicious scripts via the sname parameter in the admin update page, potentially compromising user sessions.
- 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-2026-4557?
CVE-2026-4557 is a medium-severity cross-site scripting vulnerability in code-projects Exam Form Submission, published on 22 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 vulnerability was detected in code-projects Exam Form Submission 1.0. This impacts an unknown function of the file /admin/update_s1.php. Performing a manipulation of the argument sname results in cross site scripting. The attack may be initiated remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-4557?
How do I fix CVE-2026-4557?
No fix has been published for CVE-2026-4557 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-2026-4557 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4557 exists.
Sources
Also known as GHSA-v6pg-hpm6-mh6m.