// For flags

CVE-2025-22871

Request smuggling due to acceptance of invalid chunked data in net/http

Severity Score

9.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.

A flaw was found in the net/http golang package. The net/http package incorrectly accepts messages that end with a line feed (LF) instead of the proper line ending. When used with another server that also misinterprets this, it can lead to request smuggling—where an attacker tricks the system to send hidden or unauthorized requests.

An update for the container-tools:rhel8 module is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

*Credits: Jeppe Bonde Weikop
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2025-01-08 CVE Reserved
  • 2025-04-04 CVE Published
  • 2025-04-18 CVE Updated
  • 2025-06-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Go Standard Library
Search vendor "Go Standard Library"
 Net/http/internal
Search vendor "Go Standard Library" for product "Net/http/internal"
 < 1.23.8
Search vendor "Go Standard Library" for product "Net/http/internal" and version " < 1.23.8"
en
Affected
Go Standard Library
Search vendor "Go Standard Library"
 Net/http/internal
Search vendor "Go Standard Library" for product "Net/http/internal"
 >= 1.24.0-0 < 1.24.2
Search vendor "Go Standard Library" for product "Net/http/internal" and version " >= 1.24.0-0 < 1.24.2"
en
Affected