CVE-2026-32891

Anchorr Privilege Escalation: Jellyseerr User → Anchorr Admin via Stored XSS

State
Published
Severity
9.1 Critical
Published
Mar 20, 2026
Updated
Mar 20, 2026
Reserved
Mar 16, 2026

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Description

Anchorr is a Discord bot for requesting movies and TV shows and receiving notifications when items are added to a media server. Versions 1.4.1 and below contain a stored XSS vulnerability in the Jellyseerr user selector. Jellyseerr allows any account holder to execute arbitrary JavaScript in the Anchorr admin's browser session. The injected script calls the authenticated /api/config endpoint - which returns the full application configuration in plaintext. This allows the attacker to forge a valid Anchorr session token and gain full admin access to the dashboard with no knowledge of the admin password. The same response also exposes the API keys and tokens for every integrated service, resulting in simultaneous account takeover of the Jellyfin media server (via JELLYFIN_API_KEY), the Jellyseerr request manager (via JELLYSEERR_API_KEY), and the Discord bot (via DISCORD_TOKEN). This issue has been fixed in version 1.4.2.

Scores

CVSSScoreVectorSource
3.19.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:HGitHub_M

Weaknesses

  • CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
  • CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer
  • CWE-311 Missing Encryption of Sensitive Data

Affected Products

ProductVersions
AnchorropenVESSL
  • < 1.4.2Affected

References

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