Cyber Resilience

CVE-2026-38967

CriticalUpdated

Published: 02 June 2026

Published
02 June 2026
Modified
17 June 2026
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0033 25.1th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-38967 is a critical-severity HTTP Request/Response Splitting (CWE-113) vulnerability. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 25.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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

CWE(s)
CWE-113

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

CWE-113 response header injection in public HTTP framework directly enables exploitation of public-facing web apps.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2024-52875Shared CWE-113
CVE-2026-39971Shared CWE-113
CVE-2025-55271Shared CWE-113
CVE-2026-34520Shared CWE-113
CVE-2026-42035Shared CWE-113
CVE-2026-41683Shared CWE-113
CVE-2025-59151Shared CWE-113
CVE-2026-40175Shared CWE-113

Affected Assets

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References