Vulnerability 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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/junegunn/fzf
- https://github.com/junegunn/fzf/blob/v0.74.5/src/options.go#L1680-L1736
- https://github.com/junegunn/fzf/commit/b412a450538e5f4a1d7057732e75d945dafa18a6
- https://www.vulncheck.com/advisories/fzf-0.36.0-through-0.74.5-denial-of-service
FAQ
What is CVE-2026-115319?
CVE-2026-115319 is a vulnerability with a CVSS score of 2.5 (LOW). 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 co...
How severe is CVE-2026-115319?
CVE-2026-115319 has been rated LOW with a CVSS base score of 2.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115319?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.