Vulnerability Description
An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Related Weaknesses (CWE)
References
- https://fenrisk.com/hiawatha-http-smuggling
- https://www.rfc-editor.org/rfc/rfc2616
- https://www.rfc-editor.org/rfc/rfc2616.html#section-4.4
- https://www.rfc-editor.org/rfc/rfc9112.html#section-6.3
- https://fenrisk.com/hiawatha-http-smuggling
FAQ
What is CVE-2026-51785?
CVE-2026-51785 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request
How severe is CVE-2026-51785?
CVE-2026-51785 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-51785?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.