CVE-2022-26377

mediumpriority · attend · 47EPSS 0.211 · 98 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

21.1% (98th) EPSS

CVSS 5 · medium

Is it mine?

53 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-26

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedService Suitecisa_csaf_ot
Update to version 9.8.1.4

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · CISA US

v3.16.1mediumAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-444USprimaryCWE-444USCWE-444US

exploits (1)

Public proof-of-concept and weaponised exploit code.

watchtowrlabs/ibm-qradar-ajp_smuggling_CVE-2022-26377_pocwatchtowrlabs/ibm-qradar-ajp_smuggling_CVE-2022-26377_pocPoC · poc_in_github

affected products (53)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Apache HTTP Server <2.4.54all versionscert_bundDE
Baramundi Management Suiteall versionscert_bundDEcpe:/a:baramundi:management_suite:-
Broadcom Brocade Switchall versionscert_bundDEcpe:/h:brocade:switch:-
F5 BIG-IPall versionscert_bundDEcpe:/a:f5:big-ip:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
HCL Commerceall versionscert_bundDEcpe:/a:hcltechsw:commerce:-
HPE Switchall versionscert_bundDEcpe:/h:hp:switch:-
IBM HTTP Serverall versionscert_bundDEcpe:/a:ibm:http_server:-
IBM HTTP Server 7.0all versionscert_bundDEcpe:/a:ibm:http_server:7.0
IBM HTTP Server 8.0all versionscert_bundDEcpe:/a:ibm:http_server:8.0
IBM HTTP Server 8.5all versionscert_bundDEcpe:/a:ibm:http_server:8.5
IBM HTTP Server 9.0all versionscert_bundDEcpe:/a:ibm:http_server:9.0
IBM QRadar SIEM <7.5.0 UP8all versionscert_bundDE
IBM Rational Build Forge <8.0.0.24all versionscert_bundDE
IBM WebSphere Application Serverall versionscert_bundDEcpe:/a:ibm:websphere_application_server:-
NetApp Data ONTAPall versionscert_bundDEcpe:/a:netapp:data_ontap:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
QNAP NASall versionscert_bundDEcpe:/h:qnap:nas:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-

showing 20 of 53

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0192Apache HTTP Server: Mehrere SchwachstellenDeutsch2022-06-07csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache HTTP Server ausnutzen, um falsche Informationen darzustellen, vertrauliche Informationen offenzulegen, einen Denial of Service Zustand herzustellen und Sicherheitsmaßnahmen zu umgehen.
WID-SEC-W-2024-1591Juniper JUNOS: Mehrere SchwachstellenDeutsch2024-07-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive zu umgehen.
ICSA-25-133-01Hitachi Energy Service Suite2025-02-25icsa · cisa_csaf_otUS
Hitachi Energy is aware of the multiple vulnerabilities related to open-source Apache Tomcat components that affect the Service Suite product versions listed in this document. An attacker successfully exploiting these vulnerabilities can cause confidentiality, integrity and availability impacts. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
BIT-apache-2022-26377mod_proxy_ajp: Possible request smuggling2024-03-06vendor · osvUS
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.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund cisa_csaf_ot osv NVD CVE.org MITRE

published 2022-06-09modified 2026-06-17

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+546 more

references (38)

External citations — patches, advisories, analysis.

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