Inconsistent interpretation of HTTP requests in hiawatha - CVE-2025-57783
Published: September 12, 2025
Vulnerability identifier: #VU115189
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-57783
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests in the fetch_request function. A remote attacker can smuggle arbitrary requests and access restricted resources managed by the server.
Affected software
hiawatha
How to mitigate CVE-2025-57783
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.