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01 Record

CVE-2021-41114

HTTP Host Header Injection in Request Handling in Typo3

MediumPUBLISHEDCNA: GitHub_M
CNA base score4.8 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

02 Description

HTTP Host Header Injection in Request Handling in Typo3

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.22% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 68.2% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-10-05 17:15Z5 YR AGO
Last updated
2024-08-04 02:59Z2 YR AGO
Reserved
2021-09-15
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 4.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Weaknesses
  • CWE-20Improper Input ValidationClass
  • CWE-644Improper Neutralization of HTTP Headers for Scripting SyntaxVariant
Data version
5.1
Document digest
5a490ac71112a9e334e64619ea9a3e795f4179b4d3260a3aed3fbbd436d66d9b

05 Affected products

VendorProductVersionsPlatforms
TYPO3typo3>= 11.0.0, < 11.5.0—

06 References