CVE-2026-38967

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

Critical · published June 2, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
47.9
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00598 · 47.9th percentile
Published
2026-06-02T00:00Z
EPSS history
Timeline
  • 02 JUN 00:00Z
    CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values
    cvelistv5