CVE-2025-59822 (GCVE-0-2025-59822)
Vulnerability from cvelistv5
Published
2025-09-23 18:54
Modified
2025-09-23 19:17
Severity ?
6.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Summary
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
Impacted products
Vendor Product Version
http4s http4s Version: < 0.23.31
Version: >= 1.0.0-M1, < 1.0.0-M45
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    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2025-59822\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-09-23T19:17:26.320Z\", \"dateReserved\": \"2025-09-22T14:34:03.470Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-09-23T18:54:42.867Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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