CVE-2026-27793

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

Emby, Jellyfin, Plex, Pushbullet, Pushover, Seerr, Telegram

Seerr

< 3.1.0

Fix

Available

CVSS 3.1

6.5 MEDIUM

EPSS

0.2% (14th percentile)

Weakness

CWE-639

NVD status

Analyzed

Published

2026-02-27

No exploit for CVE-2026-27793 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.