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CVE-2022-26377

HighPublished

mod_proxy_ajp: Possible request smuggling

Published: Jun 8, 2022
Updated: Aug 3, 2024
Assigning CNA: apache
Evidence observed: Aug 5, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

21.1%

Moderate · next 30 days

Percentile: 97.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.53 and prior versions.

Sources

ibm-qradar-ajp_smuggling_CVE-2022-26377_pocPoC
Proof-of-concept exploit for CVE-2022-26377, an AJP smuggling vulnerability that poisons the HTTP response queue of IBM QRadar with a stored redirect.

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