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Electronic Judging System CVE-2026-9527

| EUVD-2026-31787 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-05-26 VulDB GHSA-cv39-99wf-hfgm
2.1
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
2.1 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

3
Analysis Generated
Jun 08, 2026 - 13:25 vuln.today
Severity Changed
May 26, 2026 - 20:07 NVD
MEDIUM LOW
CVSS changed
May 26, 2026 - 20:07 NVD
4.3 (MEDIUM) 2.1 (LOW)

DescriptionCVE.org

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.

AnalysisAI

Reflected cross-site scripting in itsourcecode Electronic Judging System 1.0 allows unauthenticated remote attackers to inject malicious scripts via the fname parameter of /admin/judges.php, executing arbitrary JavaScript in the context of a victim's browser session. The CVSS 4.0 score of 2.1 reflects the low integrity impact and mandatory user interaction, consistent with a reflected XSS that requires a victim to follow a crafted URL. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify public-facing /admin/judges.php endpoint
Delivery
Craft URL with XSS payload in fname parameter
Exploit
Deliver link to admin via phishing or message
Execution
Admin clicks crafted URL
Persist
Injected script executes in admin browser session
Impact
Limited integrity impact achieved

Vulnerability AssessmentAI

Exploitation Exploitation requires an administrator or privileged user of the Electronic Judging System to interact with a crafted URL targeting `/admin/judges.php` - the CVSS vector UI:P explicitly encodes this victim interaction requirement. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The real-world risk of this vulnerability is low across all available signals. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker identifies the vulnerable `/admin/judges.php` endpoint on a publicly accessible installation of Electronic Judging System 1.0 and crafts a URL containing a JavaScript payload in the `fname` parameter. The attacker delivers this URL to an administrator via phishing or a malicious link embedded in a message. …
Remediation No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-9527 vulnerability details – vuln.today

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