CVE-2026-50018

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Source
https://cve.org/CVERecord?id=CVE-2026-50018
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-50018.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-50018
Aliases
Downstream
Related
Published
2026-09-11T21:28:29Z
Modified
2026-10-16T02:59:54Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-400",
        "CWE-770"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50018.json"
}
References

Affected packages

Git / github.com/spectolabs/hoverfly

Affected ranges

Type
GIT
Repo
https://github.com/spectolabs/hoverfly
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
012811304202ed426959c2e26e7a5d32e4ce8b7e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.12.8"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "original_tag":  "v1.12.8",
            "range":  [
                {
                    "fixed":  "012811304202ed426959c2e26e7a5d32e4ce8b7e"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.12.8"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

v0.*
v0.1
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.11.0
v0.11.1
v0.11.2
v0.11.3
v0.11.4
v0.11.5
v0.12.0
v0.12.1
v0.12.2
v0.12.3
v0.13.0
v0.14.0
v0.14.1
v0.14.2
v0.15.0
v0.15.1
v0.16.0
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.17.4
v0.17.5
v0.17.6
v0.17.7
v0.2
v0.3
v0.4
v0.5
v0.5.1
v0.5.10
v0.5.11
v0.5.12
v0.5.13
v0.5.14
v0.5.15
v0.5.16
v0.5.17
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.7.0
v0.7.1
v0.8.0
v0.8.1
v0.8.2
v0.9.0
v0.9.1
v0.9.2
v1.*
v1.0.0
v1.0.0-rc.1
v1.0.0-rc.2
v1.0.1
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.10.0
v1.10.1
v1.10.10
v1.10.11
v1.10.12
v1.10.13
v1.10.2
v1.10.3
v1.10.4
v1.10.5
v1.10.6
v1.10.7
v1.10.8
v1.10.9
v1.11.0
v1.11.1
v1.11.2
v1.11.3
v1.12.0
v1.12.1
v1.12.2
v1.12.3
v1.12.4
v1.12.5
v1.12.6
v1.12.7
v1.2.0
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.7
v1.4.0
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.6.0
v1.6.1
v1.6.2
v1.6.3
v1.7.0
v1.8.0
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v1.9.4
v1.9.5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-50018.json"