PT-2026-53864 · Fzf · Fzf

Marcin Wyczechowski + 1 · Publicado 2026-06-30 · Atualizado 2026-06-30 · CVE-2026-53433

Mitre

CVSS v4.0

5.7

Média

Vetor base

AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Correção

Enumeração de Fraquezas

CWE-407

Identificadores relacionados

CVE-2026-53433

Produtos afetados

Fzf

Referências · 4

• https://github.com/junegunn/fzf · Nota
• https://github.com/junegunn/fzf/commit/7963a2c6586c0b9eaa89b8995de8f0e08cf8a4ce · Nota
• https://cert.pl/en/posts/2026/06/CVE-2026-53432 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-53433 · Nota de Segurança