Unauthenticated script execution via reflected debug-path input
Published Apr 18, 2024 · Updated Nov 4, 2025
Cross-site scripting in DerbyNet 9.0 and earlier allows remote attackers to execute JavaScript through a crafted render-document.php URL. The endpoint echoes attacker-controlled path data from PHP server variables in debug output without context-appropriate encoding. Exploitation requires a victim to follow the crafted URL, after which the script runs in the DerbyNet origin and can access data available to that browser session.
Summary
What happened
Cross-site scripting in DerbyNet 9.0 and earlier allows remote attackers to execute JavaScript through a crafted render-document.php URL. The endpoint echoes attacker-controlled path data from PHP server variables in debug output without context-appropriate encoding. Exploitation requires a victim to follow the crafted URL, after which the script runs in the DerbyNet origin and can access data available to that browser session.
The record
- CVE
- CVE-2024-30920
- Published
- Apr 18, 2024
- Updated
- Nov 4, 2025
- Vendor
- DerbyNet
- Product
- DerbyNet
- Classifications
- CWE-79, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 18, 2024CVE publishedPublication date reported by the CVE source.
- Nov 4, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=9.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- DerbyNet render-document.php XSS proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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