Vulnerabilities
Projects
Vulnerability Disclosure
About Us
Contact Us
Mend.io Vulnerability Database
What is a WS vulnerability ID?
What is an MSC vulnerability ID?
We found results for “”
CVE-2025-59822
Good to know:
Date: September 23, 2025
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.
Severity Score
Related Resources (5)
Severity Score
Weakness Type (CWE)
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-444Top Fix
Upgrade Version
Upgrade to version org.http4s:http4s-ember-core_2.12:0.23.31;org.http4s:http4s-ember-core_2.13:0.23.31;org.http4s:http4s-ember-core_2.13:1.0.0-M45;org.http4s:http4s-ember-core_3:0.23.31;org.http4s:http4s-ember-core_3:1.0.0-M45;https://github.com/http4s/http4s.git - v0.23.31;https://github.com/http4s/http4s.git - v1.0.0-M45
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | HIGH |
| Availability (A): | NONE |