HOMEVULNERABILITIESCVE-2025-59822
HIGH

CVE-2025-59822

CWE-444Published: September 23, 2025· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-59822 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

typelevel1 product(s)
http4s
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/http4s/http4s/commit/dd518f7c967e5165813b8d4a48a82b8fab852d41
ADVISORYhttps://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrr
ADVISORYhttps://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrr

All References (3)

→
https://github.com/http4s/http4s/commit/dd518f7c967e5165813b8d4a48a82b8fab852d41Patch
→
https://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrrExploit · Vendor Advisory
→
https://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrrExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2025-59822
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-444
CISA KEVNo
Affected1 vendor(s)
PublishedSep 23, 2025

Related CVEs (CWE-444)

CVE-2018-3907
10.0
CVE-2025-1867
10.0
CVE-2025-55315
9.9
CVE-2021-30180
9.8
CVE-2021-39214
9.8
CVE-2021-45468
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2025-59822 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2025-59822·NVD