TI-2025-34185 Aliases CVE-2025-54376 GHSA-jxmr-2h4q-rhxp

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

HIGH 73CWE-200Published 2025-09-10 · Updated 2025-09-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Information disclosure, Security bypass
Confidentiality · integrity · availability: High · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-287.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00711 53rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed hoverfly (SpectoLabs): 1.12.0github.com/SpectoLabs/hoverfly (Go): 1.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
SpectoLabs	hoverfly	before 1.12.0	1.12.0	Patch available	CNA
—	github.com/SpectoLabs/hoverfly (Go)	before 1.12.0	1.12.0	Patch available	GHSA-jxmr-2h4q-rhxp

hoverfly VendorSpectoLabs Affected before 1.12.0 Fixed in 1.12.0 Patch available CNA
github.com/SpectoLabs/hoverfly (Go) Vendor— Affected before 1.12.0 Fixed in 1.12.0 Patch available GHSA-jxmr-2h4q-rhxp

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:hoverfly:hoverfly::::::::	before 1.12.0	Vulnerable	SpectoLabs

cpe:2.3:a:hoverfly:hoverfly:*:*:*:*:*:*:*:* Versions before 1.12.0 Vulnerable ·SpectoLabs

Remediation

Fix · CNA hoverfly (SpectoLabs) Fixed in 1.12.0
Fix · GHSA-jxmr-2h4q-rhxp github.com/SpectoLabs/hoverfly (Go) Fixed in 1.12.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-54376
2026-10-03 Alias added: GHSA-jxmr-2h4q-rhxp

References

Other 2

TI-2025-33966 Improper input validation in SpectoLabs hoverfly CVSS 3.1CRITICAL 9.8
TI-2024-30437 Arbitrary file read in the `/api/v2/simulation` endpoint in hoverfly (`GHSL-2023-274`) CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences