Is CVE-2026-9527 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-9527 being exploited in the wild.

How severe is CVE-2026-9527?

Medium severity, with a CVSS score of 4.3, published 26 May 2026.

Is there a fix for CVE-2026-9527?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-9527 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-9527?

Check whether you run Itsourcecode Electronic Judging System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-9527: itsourcecode Electronic Judging System XSS in judges.php

CVE-2026-9527 · Severity: medium · CVSS 4.3 · Published 2026-05-26

itsourcecode Electronic Judging System, a platform used for managing and scoring competitions, contains a security flaw in its administrative interface. An attacker can exploit this by tricking a user into clicking a malicious link, allowing the attacker to execute unauthorized scripts in the user's browser. This could lead to the theft of login sessions, unauthorized actions on behalf of the user, or the defacement of the judging platform.

Technologies: Itsourcecode Electronic Judging System. Vendors: Itsourcecode.

Quick answers

Is CVE-2026-9527 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-9527 being exploited in the wild.
How severe is CVE-2026-9527?: Medium severity, with a CVSS score of 4.3, published 26 May 2026.
Which products and versions are affected?: Itsourcecode Electronic Judging System 1.0.
Is there a fix for CVE-2026-9527?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-9527 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9527?: Check whether you run Itsourcecode Electronic Judging System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected cross-site scripting (XSS) vulnerability exists in itsourcecode Electronic Judging System 1.0. The issue is located in the '/admin/judges.php' component and stems from insufficient sanitization of the 'fname' parameter. A remote attacker can exploit this by sending a specially crafted URL to a victim; when the victim visits the link, arbitrary JavaScript code is executed in their browser context. This can be used to hijack session cookies or perform unauthorized administrative actions. The exploit has been publicly disclosed with a proof-of-concept payload: <script>prompt(/xss/);</script>. No authentication is required to initiate the attack vector.

Affected products

itsourcecode Electronic Judging System 1.0

Timeline

2026-04-28: disclosed: Vulnerability details and PoC shared on GitHub.
2026-05-26: advisory: CVE-2026-9527 published.

References

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