CVE-2026-91922: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in steedos steedos-platform
Steedos Platform versions up to 3.0.15-beta.47 contain a reflected cross-site scripting (XSS) vulnerability in the anonymous /api/page/render endpoint. This flaw arises from improper escaping of query parameters within inline script elements, allowing attackers to inject malicious JavaScript. Exploitation could lead to theft of X-Auth-Token credentials from victim sessions. The vulnerability has a medium severity rating with a CVSS 4.0 score of 5.3.
AI Analysis
Technical Summary
CVE-2026-91922 is a reflected cross-site scripting vulnerability in Steedos Platform through version 3.0.15-beta.47. The issue exists in the /api/page/render endpoint, which fails to properly neutralize input in query parameters (specifically schemaApi or data) embedded in inline script elements. Attackers can craft malicious URLs containing script-terminating sequences to execute arbitrary JavaScript in the context of the victim's browser session, potentially stealing authentication tokens (X-Auth-Token).
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the victim's browser session, which can lead to theft of authentication tokens (X-Auth-Token). This compromises session integrity and could enable unauthorized actions within the affected application context. The vulnerability requires user interaction (clicking a crafted link) and is rated medium severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid clicking untrusted links targeting the /api/page/render endpoint. Monitor vendor communications for updates on official patches or mitigations.
CVE-2026-91922: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in steedos steedos-platform
Description
Steedos Platform versions up to 3.0.15-beta.47 contain a reflected cross-site scripting (XSS) vulnerability in the anonymous /api/page/render endpoint. This flaw arises from improper escaping of query parameters within inline script elements, allowing attackers to inject malicious JavaScript. Exploitation could lead to theft of X-Auth-Token credentials from victim sessions. The vulnerability has a medium severity rating with a CVSS 4.0 score of 5.3.
CVSS v4.0
Score 5.3medium
Affected software
steedos
steedos-platform
pkg:github/steedos/steedos-platformRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91922 is a reflected cross-site scripting vulnerability in Steedos Platform through version 3.0.15-beta.47. The issue exists in the /api/page/render endpoint, which fails to properly neutralize input in query parameters (specifically schemaApi or data) embedded in inline script elements. Attackers can craft malicious URLs containing script-terminating sequences to execute arbitrary JavaScript in the context of the victim's browser session, potentially stealing authentication tokens (X-Auth-Token).
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the victim's browser session, which can lead to theft of authentication tokens (X-Auth-Token). This compromises session integrity and could enable unauthorized actions within the affected application context. The vulnerability requires user interaction (clicking a crafted link) and is rated medium severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid clicking untrusted links targeting the /api/page/render endpoint. Monitor vendor communications for updates on official patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-15T10:42:43.305Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa941d955bf5e2cf5d76aaa
Added to database: 09/15/2026, 13:02:17 UTC
Last enriched: 09/15/2026, 13:16:34 UTC
Last updated: 09/15/2026, 13:21:28 UTC
Views: 4
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