CVE-2026-32702
Cleanuparr has Username Enumeration via Timing Attack
Description
Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. From 2.7.0 to 2.8.0, the /api/auth/login endpoint contains a logic flaw that allows unauthenticated remote attackers to enumerate valid usernames by measuring the application's response time. It appears that the hashing function, which is the most time-consuming part of the process by design, occurs as part of the VerifyPassword function. With the short circuits occurring before the hashing function, a timing differential is introduced that exposes validity to the actor. This vulnerability is fixed in 2.8.1.
INFO
Published Date :
March 13, 2026, 9:09 p.m.
Last Modified :
March 13, 2026, 9:09 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-32702
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Cleanuparr to version 2.8.1 or later.
- Verify the authentication endpoint is properly secured.
- Monitor authentication logs for suspicious activity.
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CVE-2026-32702 vulnerability anywhere in the article.