๐Ÿ” CVE Alert

CVE-2026-4103

MEDIUM 6.4

Cross-Site Scripting via HTML Sanitization in WSO2 Publisher and Developer Portals Allows Malicious Script Execution

CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th

Insufficient HTML sanitization in the Publisher Portal and Developer Portal allows untrusted user input to be rendered without proper encoding or neutralization. This enables the injection and execution of malicious JavaScript when affected API documents are viewed. Successful exploitation may result in the execution of malicious scripts within the user's browser context when viewing API documentation. Users with permissions to access the API documentation through these portals may be impacted, potentially allowing attackers to perform actions on behalf of the user, depending on their session privileges.

CWE CWE-79
Vendor wso2
Product wso2 api control plane
Published Sep 14, 2026
Last Updated Sep 14, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Affected Versions

WSO2 / WSO2 API Control Plane
4.5.0 < 4.5.0.55 4.6.0 < 4.6.0.19
WSO2 / WSO2 API Manager
3.2.0 < 3.2.0.470 3.2.1 < 3.2.1.89 4.1.0 < 4.1.0.254 4.2.0 < 4.2.0.194 4.3.0 < 4.3.0.105 4.4.0 < 4.4.0.69 4.5.0 < 4.5.0.54 4.6.0 < 4.6.0.18

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
security.docs.wso2.com: https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-4844/

Credits

San Gil from Security Office