CVE-2026-4103: Cross-Site Scripting via HTML Sanitization in WSO2 Publisher and Developer Portals Allows Malicious Script Execution
WSO2 · WSO2 API Control Plane
Vendor fix available · Affected: WSO2 API Control Plane · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 23% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- WSO2 · WSO2 API Control Planefrom 4.5.0 before 4.5.0.55; from 4.6.0 before 4.6.0.19
- WSO2 · WSO2 API Managerfrom 3.2.0 before 3.2.0.470; from 3.2.1 before 3.2.1.89; from 4.1.0 before 4.1.0.254; from 4.2.0 before 4.2.0.194; from 4.3.0 before 4.3.0.105; from 4.4.0 before 4.4.0.69 and 2 more
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Cross-site Scripting
- Vendor
- WSO2
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-4103 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.