CVE-2026-53433

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Source
https://cve.org/CVERecord?id=CVE-2026-53433
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53433.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53433
Downstream
Published
2026-06-30T12:01:14.407Z
Modified
2026-07-08T08:13:42.769624540Z
Severity
  • 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Denial of Service in fzf
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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53433.json",
    "cna_assigner": "CERT-PL",
    "cwe_ids": [
        "CWE-407"
    ]
}
References

Affected packages

Git / github.com/junegunn/fzf

Affected ranges

Type
GIT
Repo
https://github.com/junegunn/fzf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ce4bef75954bebd87e0886435bcf8c6904328ab0
Fixed
7963a2c6586c0b9eaa89b8995de8f0e08cf8a4ce
Database specific 
{
    "cpe": "cpe:2.3:a:junegunn:fzf:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.73.1"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1.0
0.10.0
0.10.1
0.10.2
0.10.3
0.10.4
0.10.5
0.10.6
0.10.7
0.10.8
0.10.9
0.11.0
0.11.1
0.11.2
0.11.3
0.11.4
0.12.0
0.12.1
0.12.2
0.13.0
0.13.1
0.13.2
0.13.3
0.13.4
0.13.5
0.15.0
0.15.1
0.15.2
0.15.3
0.15.4
0.15.5
0.15.6
0.15.7
0.15.8
0.15.9
0.16.0
0.16.1
0.16.10
0.16.11
0.16.2
0.16.3
0.16.4
0.16.5
0.16.6
0.16.7
0.16.8
0.16.9
0.17.0
0.17.0-2
0.17.1
0.17.3
0.17.4
0.17.5
0.18.0
0.19.0
0.20.0
0.21.0
0.21.0-1
0.21.1
0.22.0
0.23.0
0.23.1
0.24.0
0.24.0-1
0.24.1
0.24.2
0.24.3
0.24.4
0.25.0
0.25.1
0.26.0
0.27.0
0.27.1
0.27.2
0.27.3
0.28.0
0.29.0
0.3.1
0.30.0
0.32.0
0.32.1
0.33.0
0.34.0
0.35.0
0.35.1
0.36.0
0.37.0
0.38.0
0.39.0
0.4.0
0.4.2
0.40.0
0.41.0
0.41.1
0.42.0
0.43.0
0.44.0
0.44.1
0.45.0
0.46.0
0.46.1
0.47.0
0.48.0
0.48.1
0.49.0
0.5.0
0.5.1
0.50.0
0.51.0
0.52.0
0.52.1
0.53.0
0.6.0
0.7.0
0.7.1
0.8.0
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.9.0
0.9.1
0.9.10
0.9.11
0.9.12
0.9.13
0.9.2
0.9.3
0.9.4
0.9.4-1
0.9.7
0.9.7-1
v0.*
v0.54.0
v0.54.1
v0.54.2
v0.54.3
v0.55.0
v0.56.0
v0.56.1
v0.56.2
v0.56.3
v0.57.0
v0.58.0
v0.59.0
v0.60.0
v0.60.1
v0.60.2
v0.60.3
v0.61.0
v0.61.1
v0.61.2
v0.61.3
v0.62.0
v0.63.0
v0.64.0
v0.65.0
v0.65.1
v0.65.2
v0.66.0
v0.66.1
v0.67.0
v0.68.0
v0.70.0
v0.71.0
v0.72.0
v0.73.0

Database specific

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