Vulnerability · Published Mar 13, 2026 · Assigned by GitHub_M

CVE-2026-32702Cleanuparr has Username Enumeration via Timing Attack

Medium 6.9

In plain English

A medium-severity security flaw in Cleanuparr from Cleanuparr. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.3%top 73.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Cleanuparr	Cleanuparr	>= 2.7.0, <= 2.8.0

Weakness: CWE-208 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/Cleanuparr/Cleanuparr/security/advisories/GHSA-gjmf-m27r-2c9v x_refsource_CONFIRM