---
id: CVE-2026-91922
title: >-
  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
summary: >-
  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 mali…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: steedos
product: steedos-platform
affected:
  - steedos-platform <= 3.0.15-beta.47
published: '2026-09-15'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91922'
references:
  - url: 'https://github.com/steedos/steedos-platform'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/steedos/steedos-platform/blob/044423a3f326d86cf17f0e45adcbd44d2d3b06dd/services/service-pages/main/default/routes/page_render.router.js
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/steedos/steedos-platform/blob/044423a3f326d86cf17f0e45adcbd44d2d3b06dd/services/service-pages/main/default/routes/page_view.ejs
    label: disclosure@vulncheck.com
  - url: 'https://github.com/steedos/steedos-platform/issues/8354'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/steedos-platform-through-3.0.15-beta.47-reflected-xss-via-page-render
    label: disclosure@vulncheck.com
  - url: 'https://github.com/steedos/steedos-platform/issues/8354'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00338
epssPercentile: 0.24421
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T12:39:45.686764Z'
ingestedAt: '2026-09-15T11:36:07.419Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.