CVE-2026-4103
Cross-Site Scripting via HTML Sanitization in WSO2 Publisher and Developer Portals Allows Malicious Script Execution
MEDIUM 6.4
At a glance
- Source
- NVD
- EPSS
- EPSS 0.30 % · percentile 23 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- WSO2
- NVD status
- Deferred
Description
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.
Weaknesses (CWE)
- CWE-79 — Cross-site Scripting (XSS)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | WSO2 |
| CVSS 3.1 | MEDIUM 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | NVD · ed10eef1-636d-4fbe-9993-6890dfa878f8 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-77586
- GCVE · GCVE-0-2026-4103
Affected products
| Product | Versions |
|---|---|
| WSO2 · WSO2 API Control Plane | affected 4.5.0 < 4.5.0.55 ; affected 4.6.0 < 4.6.0.19 |
| WSO2 · WSO2 API Manager | unknown 0 < 3.2.0 ; affected 3.2.0 < 3.2.0.470 ; affected 3.2.1 < 3.2.1.89 ; affected 4.1.0 < 4.1.0.254 ; affected 4.2.0 < 4.2.0.194 ; affected 4.3.0 < 4.3.0.105 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |