CVE-2026-91922
Steedos Platform through 3.0.15-beta.47 Reflected XSS via page render
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 15, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 15, 2026
Description
Steedos Platform through 3.0.15-beta.47 contains a reflected cross-site scripting vulnerability in the anonymous /api/page/render endpoint that fails to properly escape query parameters in inline script elements. Attackers can craft malicious links with script-terminating sequences in the schemaApi or data parameters to execute arbitrary JavaScript in victim sessions and steal X-Auth-Token credentials.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
steedos-platformsteedos |
|
References
- GitHub Issue #8354issue-tracking
- https://github.com/steedos/steedos-platformproduct
- page_render.router.js - anonymous route copying schemaApi and data into the templatetechnical-description
- page_view.ejs - unescaped EJS output of pageSchema and queryData inside an inline scripttechnical-description
- VulnCheck Advisory: Steedos Platform through 3.0.15-beta.47 Reflected XSS via page renderthird-party-advisory
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