CVE-2025-54376Public exploitNetwork attack vector

Unauthenticated log disclosure via unguarded WebSocket route

Published Sep 10, 2025 · Updated Sep 10, 2025

Authentication bypass in SpectoLabs Hoverfly before 1.12.0 allows remote attackers to stream application logs without credentials. The LogsHandler.RegisterRoutes method mounts /api/v2/ws/logs without RequireTokenAuthentication, unlike protected admin routes. Exposure requires network access to the admin interface with authentication enabled and reveals logged request bodies, tokens, and file paths.

CVSS severity7.5
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in SpectoLabs Hoverfly before 1.12.0 allows remote attackers to stream application logs without credentials. The LogsHandler.RegisterRoutes method mounts /api/v2/ws/logs without RequireTokenAuthentication, unlike protected admin routes. Exposure requires network access to the admin interface with authentication enabled and reveals logged request bodies, tokens, and file paths.

The record

CVE
CVE-2025-54376
Published
Sep 10, 2025
Updated
Sep 10, 2025
Vendor
SpectoLabs
Product
Hoverfly
Classifications
CWE-532, CWE-287, CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SpectoLabs · Hoverflyversion=< 1.12.0

Published CVSS scores

7.8GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
CWE-287Improper Authentication
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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