CVE-2026-38967

Severity CVSS v4.0:

Pending analysis

Type:

CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Publication date:

02/06/2026

Last modified:

03/06/2026

Description

CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

References to Advisories, Solutions, and Tools

https://github.com/CrowCpp/Crow/issues/1165
https://github.com/CrowCpp/Crow/pull/1167