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OpenAdvisories

Product · SpectoLabs

hoverfly

5 known vulnerabilities.

hoverfly at a glance

Last 12 months
2
Critical · all time
1
Exploited · all time
0
Public exploit · all time
1
New vulnerabilities per month · last 12 months
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All Critical High Medium Low Exploited only Public exploit

5 results · Feed

  • Medium 6.5
    CVE-2026-50018

    Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions

    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 resp…

    SpectoLabs hoverfly github.com/SpectoLabs/hoverfly Go
  • High 7.5
    CVE-2026-50013

    Hoverfly: Process Crash via Concurrent Map Write Race Condition in Diff Mode

    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 processe…

    SpectoLabs hoverfly github.com/SpectoLabs/hoverfly Go
  • High 7.8
    CVE-2025-54376

    Hoverfly's WebSocket endpoint `/api/v2/ws/logs` reachable without authentication even when --auth is enabled.

    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, Hoverfly’s admin WebSocket endpoint /api/v2/ws/logs is not protected by the same authentication middleware that guards the REST admin API. Consequently, an unauthenticated remote at…

    SpectoLabs hoverfly github.com/SpectoLabs/hoverfly Go
  • Critical 9.8
    CVE-2025-54123 Public exploit EPSS 11%

    Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation

    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at `/api/v2/hoverfly/middleware` endpoint due to insufficient validation and sanitization i…

    SpectoLabs hoverfly github.com/SpectoLabs/hoverfly Go
  • High 7.5
    CVE-2024-45388 EPSS 56%

    Arbitrary file read in the `/api/v2/simulation` endpoint in hoverfly (`GHSL-2023-274`)

    Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be a…

    SpectoLabs hoverfly github.com/SpectoLabs/hoverfly Go