CVE-2023-29406 - CVE House
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Status published Unknown CVE-2023-29406

Insufficient sanitization of Host header in net/http

Vulnerability Description

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Bartek Nowotarski

References

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Affected Vendor

Go standard library

View all reports →

Affected Software

net/http
Vulnerable Versions:
0, 1.20.0-0

Timeline

Official Publish: July 11th, 2023
Last Modified: February 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.