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CVE-2021-40438

🗓️ 16 Sep 2021 14:40:23Reported by apacheType 
cve
 cve🔗 web.nvd.nist.gov📰️ 10 Media mentions👁 4682 Views

A crafted request uri-path can cause mod_proxy to forward the request to an origin server chosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities have been identified in IBM HTTP Server shipped with IBM Rational ClearCase (CVE-2021-39275, CVE-2021-40438, CVE-2021-34798)
8 Nov 202104:06
–ibm
IBM Security Bulletins		Security Bulletin: Apache HTTP Server as used in IBM QRadar SIEM is vulnerable to server-side request forgery (SSRF) (CVE-2021-40438)
20 Dec 202121:02
–ibm
IBM Security Bulletins		Security Bulletin: IBM Rational Build Forge 8.0.x is affected by Apache HTTP Server version used in it.(CVE-2021-40438)
17 Jan 202218:05
–ibm
IBM Security Bulletins		Security Bulletin: IBM Security SiteProtector System is affected by Apache HTTP Server vulnerabilities (CVE-2021-40438, CVE-2021-34798)
15 Apr 202204:37
–ibm
IBM Security Bulletins		Security Bulletin: A security vulnerability has been identified in IBM WebSphere Application Server, which is a required product for IBM Tivoli Network Manager IP Edition (CVE-2021-40438, CVE-2021-34798)
18 Oct 202106:25
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM HTTP Server used by WebSphere Application Server
11 Nov 202119:48
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities have been identified in IBM HTTP Server shipped with WebSphere Remote Server (CVE-2021-40438, CVE-2021-34798)
17 Dec 202116:40
–ibm
IBM Security Bulletins		WebSphere Application Server and IBM HTTP Server Security Bulletin List
13 Jul 202218:04
–ibm
IBM Security Bulletins		Security Bulletin: IBM Aspera Orchestrator vulnerable to server-side request forgery due to Apache HTTP Server vulnerability (CVE-2021-40438)
2 Feb 202317:18
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities affect IBM HTTP Server (powered by Apache) for i
6 Dec 202117:06
–ibm
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NVD
Vulners
Node
resfrocky_linuxMatch8.0
Node
redhatjboss_core_servicesMatch1.0
AND
redhatenterprise_linuxMatch7.0
OR
redhatenterprise_linuxMatch8.0
Node
redhatsoftware_collectionsMatch1.0
AND
redhatenterprise_linux_serverMatch7.0
OR
redhatenterprise_linux_server_workstationMatch7.0
Node
redhatenterprise_linuxMatch8.0
OR
redhatenterprise_linux_eusMatch8.1
OR
redhatenterprise_linux_eusMatch8.2
OR
redhatenterprise_linux_eusMatch8.4
OR
redhatenterprise_linux_eusMatch8.6
OR
redhatenterprise_linux_eusMatch8.8
OR
redhatenterprise_linux_for_arm_64Match8.0
OR
redhatenterprise_linux_for_arm_64_eusMatch8.6
OR
redhatenterprise_linux_for_arm_64_eusMatch8.8
OR
redhatenterprise_linux_for_ibm_z_systemsMatch7.0_s390x
OR
redhatenterprise_linux_for_ibm_z_systemsMatch8.0
OR
redhatenterprise_linux_for_ibm_z_systems_eusMatch8.1
OR
redhatenterprise_linux_for_ibm_z_systems_eusMatch8.4
OR
redhatenterprise_linux_for_ibm_z_systems_eusMatch8.8
OR
redhatenterprise_linux_for_ibm_z_systems_eus_s390xMatch8.2
OR
redhatenterprise_linux_for_power_big_endianMatch7.0
OR
redhatenterprise_linux_for_power_little_endianMatch7.0
OR
redhatenterprise_linux_for_power_little_endianMatch8.0
OR
redhatenterprise_linux_for_power_little_endian_eusMatch8.1
OR
redhatenterprise_linux_for_power_little_endian_eusMatch8.2
OR
redhatenterprise_linux_for_power_little_endian_eusMatch8.4
OR
redhatenterprise_linux_for_power_little_endian_eusMatch8.6
OR
redhatenterprise_linux_for_power_little_endian_eusMatch8.8
OR
redhatenterprise_linux_for_scientific_computingMatch7.0
OR
redhatenterprise_linux_serverMatch7.0
OR
redhatenterprise_linux_server_ausMatch7.2
OR
redhatenterprise_linux_server_ausMatch7.3
OR
redhatenterprise_linux_server_ausMatch7.4
OR
redhatenterprise_linux_server_ausMatch7.6
OR
redhatenterprise_linux_server_ausMatch7.7
OR
redhatenterprise_linux_server_ausMatch8.2
OR
redhatenterprise_linux_server_ausMatch8.4
OR
redhatenterprise_linux_server_ausMatch8.6
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch7.6
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch7.7
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch8.1
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch8.2
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch8.4
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch8.6
OR
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsMatch8.8
OR
redhatenterprise_linux_server_tusMatch7.6
OR
redhatenterprise_linux_server_tusMatch7.7
OR
redhatenterprise_linux_server_tusMatch8.2
OR
redhatenterprise_linux_server_tusMatch8.4
OR
redhatenterprise_linux_server_tusMatch8.6
OR
redhatenterprise_linux_server_tusMatch8.8
OR
redhatenterprise_linux_server_update_services_for_sap_solutionsMatch7.6
OR
redhatenterprise_linux_server_update_services_for_sap_solutionsMatch7.7
OR
redhatenterprise_linux_update_services_for_sap_solutionsMatch8.1
OR
redhatenterprise_linux_update_services_for_sap_solutionsMatch8.2
OR
redhatenterprise_linux_update_services_for_sap_solutionsMatch8.4
OR
redhatenterprise_linux_update_services_for_sap_solutionsMatch8.6
OR
redhatenterprise_linux_update_services_for_sap_solutionsMatch8.8
OR
redhatenterprise_linux_workstationMatch7.0
Node
apachehttp_serverRange≤2.4.48
Node
fedoraprojectfedoraMatch34
OR
fedoraprojectfedoraMatch35
Node
debiandebian_linuxMatch9.0
OR
debiandebian_linuxMatch10.0
OR
debiandebian_linuxMatch11.0
Node
netappcloud_backupMatch-
OR
netappclustered_data_ontapMatch-
OR
netappstoragegridMatch-
OR
broadcombrocade_fabric_operating_system_firmwareMatch-
Node
f5f5osRange1.1.0–1.1.4
OR
f5f5osRange1.2.0–1.2.1
Node
oracleenterprise_manager_ops_centerMatch12.4.0.0
OR
oraclehttp_serverMatch12.2.1.3.0
OR
oraclehttp_serverMatch12.2.1.4.0
OR
oracleinstantis_enterprisetrackMatch17.1
OR
oracleinstantis_enterprisetrackMatch17.2
OR
oracleinstantis_enterprisetrackMatch17.3
OR
oraclesecure_global_desktopMatch5.6
OR
oraclezfs_storage_appliance_kitMatch8.8
Node
siemensruggedcom_nms
OR
siemenssinec_nmsRange<1.0.3
OR
siemenssinema_remote_connect_serverRange<3.1
OR
siemenssinema_remote_connect_serverMatch3.2
OR
siemenssinema_serverMatch14.0-
Node
tenabletenable.scRange≤5.19.1
[
  {
    "product": "Apache HTTP Server",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThanOrEqual": "2.4.48",
        "status": "affected",
        "version": "Apache HTTP Server 2.4",
        "versionType": "custom"
      }
    ]
  }
]
SourceLink
listswww.lists.apache.org/thread.html/r2eb200ac1340f69aa22af61ab34780c531d110437910cb9c0ece3b37%40%3Cbugs.httpd.apache.org%3E
listswww.lists.apache.org/thread.html/r61fdbfc26ab170f4e6492ef3bd5197c20b862ce156e9d5a54d4b899c%40%3Cusers.httpd.apache.org%3E
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
listswww.lists.apache.org/thread.html/rf6954e60b1c8e480678ce3d02f61b8a788997785652e9557a3265c00%40%3Cusers.httpd.apache.org%3E
listswww.lists.apache.org/thread.html/r82838efc5fa6fc4c73986399c9b71573589f78b31846aff5bd9b1697%40%3Cusers.httpd.apache.org%3E
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
tenablewww.tenable.com/security/tns-2021-17
securitywww.security.netapp.com/advisory/ntap-20211008-0004/
listswww.lists.apache.org/thread.html/r82c077663f9759c7df5a6656f925b3ee4f55fcd33c889ba7cd687029%40%3Cusers.httpd.apache.org%3E
oraclewww.oracle.com/security-alerts/cpujan2022.html
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27 Oct 2025 17:37Current
9.5High risk
Vulners AI Score9.5
CVSS 26.8
CVSS 3.19
EPSS0.94432
SSVC
CWE-918In Wild
cve-2021-40438apache http servermod_proxyorigin serversecurity vulnerability
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