SEPTEMBER 14, 2026
Live Feed
Back to database
Case File

CVE-2026-50018

MEDIUM · CVSS 6.5 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-11 · Last synced 2026-09-14

CyberRota Analysis

AI-Generated

Hoverfly, an open-source API simulation tool, is vulnerable to a denial-of-service condition due to unbounded goroutine accumulation when remote post-serve actions are executed against unresponsive endpoints. This can lead to memory exhaustion and potential process crashes, impacting system stability. Users of versions prior to 1.12.8 should prioritize upgrading to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-50018
Severity
MEDIUM
CVSS
6.5
EPSS
0.30%

Original NVD Description

Hoverfly is an open source API simulation tool. Prior to version 1.12.8, remote post-serve actions use `http.DefaultClient` without any timeout configuration. When the remote endpoint is unreachable or intentionally slow (accepts TCP connection but never responds), each triggered proxy request spawns a goroutine that blocks indefinitely on `http.DefaultClient.Do()`. An attacker can cause unbounded goroutine accumulation leading to memory exhaustion and process crash (OOM kill). Unlike local post-serve action execution, this requires no binary execution, only a URL pointing to a non-responsive endpoint. Version 1.12.8 patches the issue.