countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, plugins/star-rating/api/api.js allows a non-global application administrator to use uploadFeedbackFile to store attacker-controlled active content while trusting the supplied MIME type. plugins/star-rating/frontend/app.js publicly serves the stored content from feedback/preview/ with the attacker-influenced Content-Type, so a global administrator who opens the preview executes the payload in the Countly origin and exposes authenticated session capabilities, including auth_token and csrf_token values. This issue is fixed in versions 24.05.50 and 25.03.44.
History

Wed, 21 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Count
Count countly Server
Vendors & Products Count
Count countly Server

Wed, 21 Oct 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 16 Oct 2026 16:15:00 +0000

Type Values Removed Values Added
Description countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, plugins/star-rating/api/api.js allows a non-global application administrator to use uploadFeedbackFile to store attacker-controlled active content while trusting the supplied MIME type. plugins/star-rating/frontend/app.js publicly serves the stored content from feedback/preview/ with the attacker-influenced Content-Type, so a global administrator who opens the preview executes the payload in the Countly origin and exposes authenticated session capabilities, including auth_token and csrf_token values. This issue is fixed in versions 24.05.50 and 25.03.44.
Title countly-server: Stored XSS in feedback upload enables app-admin to compromise global admin session context
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-16T16:04:45.868Z

Updated: 2026-10-21T02:24:31.741Z

Reserved: 2026-05-08T16:23:33.264Z

Link: CVE-2026-44977

cve-icon Vulnrichment

Updated: 2026-10-21T02:24:26.187Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-16T16:17:44.483

Modified: 2026-10-21T03:17:19.330

Link: CVE-2026-44977

cve-icon Redhat

No data.