CVE-2026-9527 itsourcecode Electronic Judging System judges.php cross site scripting
Remote attackers can inject malicious scripts via the fname parameter in judges.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-2026-9527?
CVE-2026-9527 is a medium-severity cross-site scripting vulnerability in itsourcecode Electronic Judging System, published on 26 May 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 determined in itsourcecode Electronic Judging System 1.0. This issue affects some unknown processing of the file /admin/judges.php. This manipulation of the argument fname causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-9527?
How do I fix CVE-2026-9527?
No fix has been published for CVE-2026-9527 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-2026-9527 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9527 exists.
Sources
Also known as GHSA-cv39-99wf-hfgm.