- 9.8CriticalCVSS base score
- 28.2%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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
Timeline
ID reserved
By apache
- 2 months later
· 2 months later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 28.2% · top 1.9% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Apache Software Foundation · Apache HTTP Server
- affected Apache HTTP Server 2.4 – ≤ 2.4.52
References
References16
- https://httpd.apache.org/security/vulnerabilities_24.html (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20220314 CVE-2022-22720: HTTP request smuggling vulnerability in Apache HTTP Server 2.4.52 and earlier (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2022-b4103753e9 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [debian-lts-announce] 20220322 [SECURITY] [DLA 2960-1] apache2 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2022-21264ec6db (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2022-78e3211c55 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://www.oracle.com/security-alerts/cpuapr2022.html (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20220321-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- https://www.oracle.com/security-alerts/cpujul2022.html (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT213257 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT213256 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT213255 (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-202208-20 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-27863 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-22720)Record last updated .