High severity · published Sep 10, 2025
CVE-2025-54376
Hoverfly's WebSocket endpoint `/api/v2/ws/logs` reachable without authentication even when --auth is enabled.
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
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 attacker can stream real-time application logs (information disclosure) and/or gain insight into internal file paths, request/response bodies, and other potentially sensitive data emitted in logs. Version 1.12.0 contains a fix for the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HO
hoverfly · SpectoLabs
< 1.12.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-54376
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-54376
Patch
https://github.com/SpectoLabs/hoverfly/commit/ffc2cc34563de67fe1a04f7ba5d78fa2d4564424
Exploit
https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-jxmr-2h4q-rhxp
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