Auth bypass in Hoverfly
CVE-2025-54376
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 unaut…
Vulnerability class: Information Disclosure
EPSS: 0.002 (36.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Hoverfly
- Spectolabs Hoverfly — versions < 1.12.0
Weakness classification (CWE)
References
- https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-jxmr-2h4q-rhxp (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- https://github.com/SpectoLabs/hoverfly/commit/ffc2cc34563de67fe1a04f7ba5d78fa2d4564424 (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-54376?
- CVE-2025-54376 is a high-severity vulnerability in Hoverfly, classified under Information Disclosure. CVSS score: 7.5/10. Published 2025-09-10.
- How severe is CVE-2025-54376?
- High severity. CVSS v3 base score is 7.5 out of 10.