Reflected XSS via unescaped add_query_arg URL
Published Oct 4, 2024 · Updated Apr 8, 2026
Reflected XSS in Tech Banker Captcha Bank 4.0.36 and earlier allows remote attackers to inject scripts through a crafted URL. At captcha-bank.php line 1297, add_query_arg constructs a URL from attacker-controlled query data without context-appropriate output escaping. No authentication is required, but a user must follow the crafted link for the injected script to execute in that user's browser context.
Summary
What happened
Reflected XSS in Tech Banker Captcha Bank 4.0.36 and earlier allows remote attackers to inject scripts through a crafted URL. At captcha-bank.php line 1297, add_query_arg constructs a URL from attacker-controlled query data without context-appropriate output escaping. No authentication is required, but a user must follow the crafted link for the injected script to execute in that user's browser context.
The record
- CVE
- CVE-2024-9375
- Published
- Oct 4, 2024
- Updated
- Apr 8, 2026
- Vendor
- Tech Banker
- Product
- Captcha Bank
- Classifications
- CWE-79, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 4, 2024CVE publishedPublication date reported by the CVE source.
- Apr 8, 2026Record 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=0 <=4.0.36
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
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Technologies
Your stack
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Your stack
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