Reflected Cross-Site Scripting Vulnerability in Steedos Platform by Steedos
CVE-2026-91922

5.3MEDIUM

Key Information:

Vendor

Steedos

Status
Steedos-platform
Vendor
CVE Published:
15 September 2026

What is CVE-2026-91922?

The Steedos Platform, up to version 3.0.15-beta.47, has a vulnerability that allows reflected cross-site scripting through the exposed /api/page/render endpoint. This vulnerability arises because the platform fails to properly escape user-supplied query parameters in inline script elements. Malicious actors can exploit this flaw by crafting URLs that contain injected script-terminating sequences within the schemaApi or data parameters. When a victim clicks on such a link, arbitrary JavaScript can be executed in their session, potentially allowing attackers to steal sensitive information such as X-Auth-Token credentials.

Affected Version(s)

steedos-platform 0 <= 3.0.15-beta.47

References

https://github.com/steedos/steedos-platform/issues/8354
issue-tracking
https://github.com/steedos/steedos-platform
product
https://github.com/steedos/steedos-platform/blob/044423a3...
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.