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Findings

Vulnerability · CVE-2026-38967

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

Published Jun 2, 2026 · corrected/updated Jul 22, 2026 · evidence confidence medium

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

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-38967 is a critical public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected version ranges have not been ingested yet. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 9.8 (technical impact); EPSS awaiting sync or unavailable (not low probability). It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-113. Sources contributing to this record: nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text, fix commit, or clear fixed-version range is stored yet.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 2, 2026 · NIST NVD

    Detected

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

  2. Jul 22, 2026 · NIST NVD

    Updated

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

Sources

  • NIST NVDVulnerability recordCVE-2026-38967

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

    nvd.nist.gov

References