CVE-2021-41114: HTTP Host Header Injection
4.8
CVSS Score
3.1
Basic Information
CVE ID
GHSA ID
EPSS Score
0.5198%
CWE
Published
10/5/2021
Updated
2/5/2024
KEV Status
No
Technology
PHP
Technical Details
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
---|---|---|---|
typo3/cms-core | composer | >= 11.0.0, < 11.5.0 | 11.5.0 |
typo3/cms | composer | >= 11.0.0, < 11.5.0 | 11.5.0 |
Vulnerability Intelligence
Miggo AI
Root Cause Analysis
The vulnerability stems from a regression where the trustedHostsPattern validation was not executed. The commit diff shows the security check (GeneralUtility::isAllowedHostHeaderValue
) was removed from determineHttpHost
, which handles Host header normalization. This omission in versions 11.0.0-11.4.0 left the system without proper Host header validation. The fix reintroduced validation via middleware, confirming this was the missing safeguard.