Description
fzf 0.36.0 through 0.74.5 contains an inefficient algorithmic complexity vulnerability in maskActionContents that allows local attackers to exhaust the --listen HTTP server through quadratic string concatenation. Attackers can repeatedly send POST bodies of about 1 MB to the unauthenticated localhost port, blocking the single-threaded server for about 30 seconds each time.
Metrics
CVSS 3.1 2.5/10
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:LWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Oct 22, 2026
- Last modified
- Oct 22, 2026
- NVD status
- Deferred