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Vulnerabilities

Vulnerability · CVE-2025-54376

Hoverfly is an open source API simulation tool.

Published Sep 10, 2025 · catalog updated Sep 10, 2025 · SpectoLabs

Check if you run it

No confirmed exploitation is on record for CVE-2025-54376. EPSS is 0.71%. Act only if a listed version of SpectoLabs is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.71%
Remediation
Version ranges on file
Affected products
vendor SpectoLabs hoverfly < 1.12.0

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor SpectoLabs hoverfly < 1.12.0< 1.12.0

How to fix CVE-2025-54376

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-54376. EPSS is 0.71%. Act only if a listed version of SpectoLabs is installed.

Which versions are affected?

Compare what you have installed with SpectoLabs hoverfly < 1.12.0 < 1.12.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.71%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 10, 2025 · EUVD

    Detected

    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,

  2. Sep 10, 2025 · EUVD

    Updated

    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,

Sources

  • CVE.orgVulnerability recordCVE-2025-54376

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-54376

    30-day exploitation probability 0.71%

    first.org
  • EUVDVulnerability recordEUVD-2025-27610

    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 rea

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.