Http4s is a Scala interface for HTTP services. In versions from 1.0.0-M1 to before 1.0.0-M45 and before 0.23.31, http4s is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer section. This vulnerability could enable attackers to bypass front-end servers security controls, launch targeted attacks against active users, and poison web caches. A pre-requisite for exploitation involves the web application being deployed behind a reverse-proxy that forwards trailer headers. This issue has been patched in versions 1.0.0-M45 and 0.23.31.
References
| Link | Resource |
|---|---|
| https://github.com/http4s/http4s/commit/dd518f7c967e5165813b8d4a48a82b8fab852d41 | Patch |
| https://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrr | Exploit Vendor Advisory |
| https://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrr | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
No history.
Information
Published : 2025-09-23 19:15
Updated : 2025-10-08 17:35
NVD link : CVE-2025-59822
Mitre link : CVE-2025-59822
CVE.ORG link : CVE-2025-59822
JSON object : View
Products Affected
typelevel
- http4s
CWE
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
