What is CVE-2023-45132?

CVE-2023-45132 is a critical-severity vulnerability in Wargio Naxsi, classified under Protection Mechanism Failure. CVSS score: 9.1/10. Published 2023-10-11.

How severe is CVE-2023-45132?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Wargio Naxsi

CVE-2023-45132

NAXSI is an open-source maintenance web application firewall (WAF) for NGINX. An issue present starting in version 1.3 and prior to version 1.6 allows someone to bypass the WAF when a malicious `X-Forwarded-For` IP matches `IgnoreIP` `IgnoreCIDR` rules. This old code was arranged to allow older NGINX versions to also support `IgnoreIP` `IgnoreCIDR` when multiple reverse proxies were present. The issue is patched in version 1.6. As a workaround, do not set any `IgnoreIP` `IgnoreCIDR` for older versions.

Published 2023-10-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Wargio Naxsi — versions >= 1.3, < 1.6

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

github.com/wargio/naxsi/security/advisories/GHSA-7qjc-q4j9-pc8x (Third Party Advisory)
github.com/wargio/naxsi/pull/103 (Patch)
github.com/wargio/naxsi/commit/1b712526ed3314dd6be7e8b0259eabda63c19537 (Patch)

Frequently asked questions

What is CVE-2023-45132?: CVE-2023-45132 is a critical-severity vulnerability in Wargio Naxsi, classified under Protection Mechanism Failure. CVSS score: 9.1/10. Published 2023-10-11.
How severe is CVE-2023-45132?: Critical severity. CVSS v3 base score is 9.1 out of 10.