CVE-2023-29476

CRITICALNVD 9.19.1—

9.1

In Menlo On-Premise Appliance before 2.88, web policy may not be consistently applied properly to intentionally malformed client requests. This is fixed in 2.88.2+, 2.89.1+, and 2.90.1+.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 28.8%
KEV: Not listed

Published

December 14, 2024

Last Modified

April 15, 2026

Advisory Details (1)

Auto-updated May 21, 2026

No patch confirmed yet.

generic

Published Security Vulnerability | Menlo Security

https://www.menlosecurity.com/published-security-vulnerabilities

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-444Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
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2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2023-29476?

CVE-2023-29476 is a critical vulnerability published on December 14, 2024. In Menlo On-Premise Appliance before 2.88, web policy may not be consistently applied properly to intentionally malformed client requests. This is fixed in 2.88.2+, 2.89.1+, and 2.90.1+.

When was CVE-2023-29476 disclosed?

CVE-2023-29476 was first published in the National Vulnerability Database on December 14, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-29476 actively exploited?

CVE-2023-29476 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-29476?

CVE-2023-29476 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2023-29476?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-29476, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-29476

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Published Security Vulnerability | Menlo Security

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-29476?

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Advisory Details (1)

Frequently asked(5)

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