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fzf 0.36.0 through 0.74.5 Denial of Service via maskActionContents

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-115319

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-115319

fzf

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "junegunn",
    "product": "fzf",
    "versions": [
      {
        "status": "affected",
        "version": "0.36.0",
        "versionType": "semver",
        "lessThanOrEqual": "0.74.5"
      }
    ],
    "packageURL": "pkg:golang/github.com/junegunn/fzf",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-115319

Source reference: /cveMetadata/cveId

Publisher severity

low

Source reference: /containers/cna/metrics

Event
#50204 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement