Vulnerability · Published Feb 27, 2026 · Assigned by GitHub_M
CVE-2026-27793Seerr has Broken Object-Level Authorization in User Profile Endpoint that Exposes Third-Party Notification Credentials
Medium 6.5
In plain English
A medium-severity authorization bypass via user-controlled key in seerr from seerr-team. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official description
Seerr is an open-source media request and discovery manager for Jellyfin, Plex, and Emby. Prior to version 3.1.0, the `GET /api/v1/user/:id` endpoint returns the full settings object for any user, including Pushover, Pushbullet, and Telegram credentials, to any authenticated requester regardless of their privilege level. This vulnerability can be exploited alone or combined with the reported unauthenticated account creation vulnerability, CVE-2026-27707. When combined, the two vulnerabilities create a zero-prior-access chain that leaks third-party API credentials for all users, including administrators. Version 3.1.0 contains a fix for both this vulnerability and for CVE-2026-27707.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| seerr-team | seerr | < 3.1.0 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/seerr-team/seerr/security/advisories/GHSA-f7xw-jcqr-57hp x_refsource_CONFIRM
- https://github.com/seerr-team/seerr/commit/4f089b29d0bb41d382168b17aa152eb5b8a25303 x_refsource_MISC
- https://github.com/seerr-team/seerr/releases/tag/v3.1.0 x_refsource_MISC