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CVE-2022-22720— HTTP request smuggling vulnerability in Apache HTTP Server 2.4.52 and earlier

Quick assessment

Affected

Apache Software Foundation Apache HTTP Server

Exploitation

Public or AI PoC available; prioritize validation

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server 存在环境问题漏洞，该漏洞源于 Apache HTTP Server 在丢弃请求正文时无法关闭入站连接，从而导致请求夹带（request smuggling）。该漏洞影响 Apache HTTP Server 2.4.52 版本及更早版本。

AI Predicted 7.5 Difficulty: Moderate EPSS 28.19% · P98 Updated Feb 25, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1102 · Web Service

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I. Basic Information for CVE-2022-22720

Vulnerability Information

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Vulnerability Title

HTTP request smuggling vulnerability in Apache HTTP Server 2.4.52 and earlier

Source: CVE Program / CVE List V5

Vulnerability Description

Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

HTTP请求的解释不一致性(HTTP请求私运)

Source: CVE Program / CVE List V5

Vulnerability Title

Apache HTTP Server 环境问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Apache Software Foundation	Apache HTTP Server	Apache HTTP Server 2.4 ~ 2.4.52	-

II. Public POCs for CVE-2022-22720

#	POC Description	Source Link	Shenlong Link
1	None	https://github.com/Benasin/CVE-2022-22720	POC Details

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2022-22720

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Vendor Advisories for CVE-2022-22720 (8)

https://support.apple.com/kb/HT213256 x_refsource_CONFIRM
https://support.apple.com/kb/HT213257 x_refsource_CONFIRM
https://support.apple.com/kb/HT213255 x_refsource_CONFIRM
Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project x_refsource_MISC
🔗 NetApp Product Security Read full article x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
🔗 Apache HTTPD: Multiple Vulnerabilities (GLSA 202208-20) — Gentoo security Read full article vendor-advisory x_refsource_GENTOO

Mailing List Discussions for CVE-2022-22720 (8)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/ vendor-advisory x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/ vendor-advisory x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/ vendor-advisory x_refsource_FEDORA
http://seclists.org/fulldisclosure/2022/May/38 mailing-list x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2022/May/35 mailing-list x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2022/May/33 mailing-list x_refsource_FULLDISC
https://lists.debian.org/debian-lts-announce/2022/03/msg00033.html mailing-list x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2022/03/14/3 mailing-list x_refsource_MLIST

https://www.cve.org/CVERecord?id=CVE-2022-22720

Same Patch Batch · Apache Software Foundation · 2022-03-14 · 4 CVEs total

CVE-2022-22719		mod_lua Use of uninitialized value of in r:parsebody
CVE-2022-22721		core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody
CVE-2022-23943		mod_sed: Read/write beyond bounds

IV. Related Vulnerabilities

Same product: Apache HTTP Server

Same vendor: Apache Software Foundation

Same weakness: CWE-444

V. Comments for CVE-2022-22720

No comments yet

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2022-22720— HTTP request smuggling vulnerability in Apache HTTP Server 2.4.52 and earlier

Quick assessment

Possible ATT&CK Techniques 2 AI

I. Basic Information for CVE-2022-22720

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2022-22720

III. Intelligence Information for CVE-2022-22720

Vendor Advisories for CVE-2022-22720 (8)

Mailing List Discussions for CVE-2022-22720 (8)

Same Patch Batch · Apache Software Foundation · 2022-03-14 · 4 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2022-22720

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