CVE-2026-50013

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Source
https://cve.org/CVERecord?id=CVE-2026-50013
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50013.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-50013
Aliases
Downstream
Related
Published
2026-09-11T21:27:40Z
Modified
2026-09-12T11:46:16Z
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
Hoverfly: Process Crash via Concurrent Map Write Race Condition in Diff Mode
Details

Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff mode, the AddDiff() function writes to the shared responsesDiff map without any synchronization (no mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the concurrent map writes trigger Go's built-in race detector which causes a fatal error: concurrent map read and map write, immediately killing the entire Hoverfly process. This is trivially exploitable by sending multiple simultaneous requests. Version 1.12.8 patches the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-362",
        "CWE-820"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50013.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": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.12.8"
        }
    ],
    "source": "AFFECTED_FIELD"
}

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/cve-osv-conversion/osv-output/CVE-2026-50013.json"