Is CVE-2023-45132 in the CISA KEV catalog?

No. CVE-2023-45132 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-45132?

CVE-2023-45132 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2023-45132?

CVE-2023-45132 has an EPSS score of 0.80% (52th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-45132

CRITICAL

9.1

CVSS v3

NVD

Description

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.

CWE-693Protection Mechanism Failure

How to fix

Remediation Available

naxsiNVD

Affected:>= 1.3, < 1.6Fixed in:1.6CVE-2023-45132derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Exploit Intelligence

0.80%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Patch2

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-693 (Protection Mechanism Failure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2465	Critical	9.8	99%	KEV + Ransom	-
CVE-2024-21412	High	8.1	95%	KEV + Ransom	Fix
CVE-2013-0431	Medium	5.3	90%	KEV + Ransom	-
CVE-2025-40536	High	8.1	82%	KEV	Fix
CVE-2019-1003030	Critical	9.9	76%	KEV	-
CVE-2025-0411	High	7.0	67%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.