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9.0
CVE-2026-44977: Countly Server feedback upload can hijack admin session
CVE-2026-44977 · published 17 days ago
Summary
The Countly Server version before 24.05.50 (or 25.03.44) lets a regular app administrator upload a crafted feedback file that is later displayed to a global administrator. When the global admin views the preview, malicious code runs in Countly’s own context, exposing their session tokens. Upgrade to the fixed versions or apply the vendor’s patch to stop the risk.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| countly | countly-server | < 24.05.50 |
Original advisory text
countly-server: Stored XSS in feedback upload enables app-admin to compromise global admin session context
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.
References
- https://github.com/Countly/countly-server/commit/ae899f37bc6d70c1b44859756ce80a2... Patch
- https://github.com/Countly/countly-server/commit/fcb16c808c0fdb6dc99fe9c66de7fc5... Patch
- https://github.com/Countly/countly-server/releases/tag/24.05.50 URL
- https://github.com/Countly/countly-server/security/advisories/GHSA-jqp4-p86c-phx... Vendor Advisory
- https://github.com/Countly/countly-server/releases/tag/25.03.44 URL
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44977... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-44977 Vendor Advisory
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published16 Oct 2026
Updated30 Oct 2026
First seen16 Oct 2026
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