CVE-2026-27793

The record

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 packages

Related vulnerabilities

• CVE-2026-13319 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before… CWE-639
• CVE-2026-111767 MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and… CWE-639
• CVE-2026-105755 vLLM is an inference and serving engine for large language models. CWE-639
• CVE-2026-105754 vLLM is an inference and serving engine for large language models. CWE-639
• CVE-2026-62140 Unauthenticated Insecure Direct Object References (IDOR) in Quiz And Survey Master <=… CWE-639
• CVE-2026-62134 Contributor Insecure Direct Object References (IDOR) in Starter Templates <= 4.7.5… CWE-639
• CVE-2026-62113 Contributor Insecure Direct Object References (IDOR) in Slim SEO <= 4.10.0 versions. CWE-639
• CVE-2026-89264 MoguBlog through 6.2 fails to validate the comment author identity in the POST… CWE-639