Stored script execution via spoofed documentation uploads
Published Sep 23, 2025 · Updated Sep 23, 2025
Stored XSS in WSO2 API Manager components allows remote authenticated users with publisher privileges to execute scripts via document uploads. Publisher REST upload handlers accepted a supported filename extension without verifying that the file bytes had the matching MIME type, so active content was stored and later rendered. Execution requires another user to open the uploaded document; it can redirect the browser, alter the UI, or read browser-accessible data, but HttpOnly session cookies prevent session hijacking.
Summary
What happened
Stored XSS in WSO2 API Manager components allows remote authenticated users with publisher privileges to execute scripts via document uploads. Publisher REST upload handlers accepted a supported filename extension without verifying that the file bytes had the matching MIME type, so active content was stored and later rendered. Execution requires another user to open the uploaded document; it can redirect the browser, alter the UI, or read browser-accessible data, but HttpOnly session cookies prevent session hijacking.
The record
- CVE
- CVE-2025-4760
- Published
- Sep 23, 2025
- Updated
- Sep 23, 2025
- Vendor
- WSO2
- Product
- WSO2 Traffic Manager
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 23, 2025CVE publishedPublication date reported by the CVE source.
- Sep 23, 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=4.5.0 <4.5.0.7
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
No public exploit references are available in this record.
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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