DEBIAN-CVE-2026-53433

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Source
https://security-tracker.debian.org/tracker/CVE-2026-53433
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53433.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-53433
Upstream
Published
2026-06-30T13:19:13Z
Modified
2026-09-14T17:03:46Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --listen mode due to inefficient HTTP body processing using repeated string concatenation, resulting in quadratic time complexity (O(n²)). A crafted POST request with many small segments can trigger excessive CPU usage during request handling.This allows a single malicious request to monopolize the single‑threaded HTTP server, blocking all other clients and resulting in denial of service. This issue was fixed in version 0.73.1.

References

Affected packages

Debian:12 / fzf

Package

Name
fzf
Purl
pkg:deb/debian/fzf?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.38.0-1
0.42.0-1
0.44.1-1
0.46.1-1
0.55.0-1
0.56.3-1
0.57.0-1
0.58.0-1
0.60.0-1
0.60.1-1
0.60.2-1
0.60.3-1
0.64.0-1
0.65.1-1
0.66.0-1
0.67.0-1
0.70.0-1
0.72.0-1
0.73.1-1
0.74.1-1
0.74.3-1

Ecosystem specific 

{
    "urgency":  "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53433.json"

Debian:13 / fzf

Package

Name
fzf
Purl
pkg:deb/debian/fzf?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.60.3-1
0.64.0-1
0.65.1-1
0.66.0-1
0.67.0-1
0.70.0-1
0.72.0-1
0.73.1-1
0.74.1-1
0.74.3-1

Ecosystem specific 

{
    "urgency":  "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53433.json"

Debian:14 / fzf

Package

Name
fzf
Purl
pkg:deb/debian/fzf?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.73.1-1

Affected versions

0.*
0.60.3-1
0.64.0-1
0.65.1-1
0.66.0-1
0.67.0-1
0.70.0-1
0.72.0-1

Ecosystem specific 

{
    "urgency":  "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53433.json"