What is CVE-2026-8023?

CVE-2026-8023 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-29.

How severe is CVE-2026-8023?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Zephyrproject Zephyr

CVE-2026-8023

Zephyr's HTTP server (subsys/net/lib/http) provides a static-filesystem resource type (HTTP_RESOURCE_TYPE_STATIC_FS, available when CONFIG_FILE_SYSTEM is enabled) that serves files from a configured root directory. Before this fix, both th…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Zephyrproject Zephyr — versions 4.0.0

Weakness classification (CWE)

CWE-22 — Path Traversal
CWE-23 — Relative Path Traversal

References

vulnerabilities@zephyrproject.org (patch)
vulnerabilities@zephyrproject.org

Frequently asked questions

What is CVE-2026-8023?: CVE-2026-8023 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-29.
How severe is CVE-2026-8023?: High severity. CVSS v3 base score is 7.5 out of 10.