Browser script execution via unescaped form fields
Published Mar 31, 2025 · Updated Mar 31, 2025
Cross-site scripting in Beego before 2.3.6 allows remote attackers to execute JavaScript in a victim's browser through rendered form data. The renderFormField function interpolates unescaped labels, names, attributes, and values into markup, then RenderForm returns template.HTML and bypasses Go's automatic escaping. Exploitation requires an application to render attacker-controlled form data and a victim to view the resulting page, enabling browser-context data theft or actions.
Summary
What happened
Cross-site scripting in Beego before 2.3.6 allows remote attackers to execute JavaScript in a victim's browser through rendered form data. The renderFormField function interpolates unescaped labels, names, attributes, and values into markup, then RenderForm returns template.HTML and bypasses Go's automatic escaping. Exploitation requires an application to render attacker-controlled form data and a victim to view the resulting page, enabling browser-context data theft or actions.
The record
- CVE
- CVE-2025-30223
- Published
- Mar 31, 2025
- Updated
- Mar 31, 2025
- Vendor
- Beego
- Product
- Beego
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 31, 2025CVE publishedPublication date reported by the CVE source.
- Mar 31, 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=< 2.3.6
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
- RenderForm 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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