High severity7.5NVD Advisory· Published Sep 23, 2025· Updated Jun 17, 2026
CVE-2025-59822
CVE-2025-59822
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.http4s:http4s-ember-core_2.12Maven | < 0.23.31 | 0.23.31 |
org.http4s:http4s-ember-core_2.13Maven | < 0.23.31 | 0.23.31 |
org.http4s:http4s-ember-core_3Maven | < 0.23.31 | 0.23.31 |
org.http4s:http4s-ember-core_2.13Maven | >= 1.0.0-M1, < 1.0.0-M45 | 1.0.0-M45 |
org.http4s:http4s-ember-core_3Maven | >= 1.0.0-M1, < 1.0.0-M45 | 1.0.0-M45 |
Affected products
49- http4s/http4sv5Range: < 0.23.31
- ghsa-coords3 versionspkg:maven/org.http4s/http4s-ember-core_2.12pkg:maven/org.http4s/http4s-ember-core_2.13pkg:maven/org.http4s/http4s-ember-core_3
< 0.23.31+ 2 more
- (no CPE)range: < 0.23.31
- (no CPE)range: < 0.23.31
- (no CPE)range: < 0.23.31
cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:*+ 44 more
- cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:*range: <0.23.31
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone1:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone10:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone11:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone12:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone13:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone14:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone15:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone16:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone17:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone18:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone19:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone2:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone20:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone21:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone22:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone23:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone24:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone25:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone26:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone27:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone28:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone29:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone30:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone31:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone32:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone33:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone34:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone35:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone36:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone37:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone38:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone39:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone4:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone40:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone41:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone42:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone43:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone44:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone6:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone7:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone8:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone9:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
4- github.com/http4s/http4s/commit/dd518f7c967e5165813b8d4a48a82b8fab852d41nvdPatchWEB
- github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrrnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-wcwh-7gfw-5wrrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-59822ghsaADVISORY
News mentions
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