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Vulnerabilities

Vulnerability · CVE-2025-54123

hoverfly hoverfly Improper Input Validation

Published Nov 10, 2025 · catalog updated Nov 10, 2025 · hoverfly hoverfly Improper Input

Patch now

CVE-2025-54123 is in the CISA known-exploited catalog. Confirm hoverfly hoverfly Improper Input against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (hoverfly hoverfly Improper Input).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
10.54%
Remediation
Remediation guidance
Affected products
vendor hoverfly hoverfly

Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint . This issue is born due to combination of three code level flaws: Insufficient Input Validation in middleware.go line 94-96; Unsafe Command Execution in local_middleware.go line 14-19; and Immediate Execution During Testing in hoverfly_service.go line 173. This allows an attacker to gain Initial-access exploit intelligence.

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 hoverfly hoverflyversion unspecified

How to fix CVE-2025-54123

What to do

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

Should you patch?

CVE-2025-54123 is in the CISA known-exploited catalog. Confirm hoverfly hoverfly Improper Input against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 10.54%. The CISA KEV listing is the exploitation evidence. 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.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 10, 2025 · VulnCheck KEV

    Detected

    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint . This issue is born due to combination of three code level flaws: Insufficient Input Vali

  2. Nov 10, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-54123

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-54123

    30-day exploitation probability 10.5%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2025-54123

    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middl

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.