CVE-2026-91922

MEDIUM 6.1

Steedos Platform through 3.0.15-beta.47 Reflected XSS via page render

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	steedos
Product	steedos-platform
Published	Sep 15, 2026
Last Updated	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

steedos / steedos-platform

0 ≤ 3.0.15-beta.47

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/steedos/steedos-platform/issues/8354 github.com: https://github.com/steedos/steedos-platform github.com: https://github.com/steedos/steedos-platform/blob/044423a3f326d86cf17f0e45adcbd44d2d3b06dd/services/service-pages/main/default/routes/page_render.router.js github.com: https://github.com/steedos/steedos-platform/blob/044423a3f326d86cf17f0e45adcbd44d2d3b06dd/services/service-pages/main/default/routes/page_view.ejs vulncheck.com: https://www.vulncheck.com/advisories/steedos-platform-through-3.0.15-beta.47-reflected-xss-via-page-render

Credits

🔍 George Chen