Bug 2558887 (CVE-2026-115319) - CVE-2026-115319 github.com/junegunn/fzf: fzf: Denial of Service via inefficient string concatenation
Summary: CVE-2026-115319 github.com/junegunn/fzf: fzf: Denial of Service via inefficie...
Keywords:
Status: NEW
Alias: CVE-2026-115319
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2559636 2559638
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-22 11:24 UTC by OSIDB Bzimport
Modified: 2026-10-23 12:49 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-22 11:24:25 UTC 
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.
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