ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2021-41114

CVE-2021-41114 is listed by TYPO3 is an open source PHP based web content management system released under the GNU GPL..

Published Oct 5, 2021 · catalog updated Jun 17, 2026 · the affected product

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-41114. EPSS is 1.22%. Act only if a listed version of the affected product is installed.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.22%
Remediation
Version ranges on file
Affected products
cpe typo3/typo3

CVE-2021-41114 is listed by TYPO3 is an open source PHP based web content management system released under the GNU GPL..

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe typo3/typo3< 11.5.0

How to fix CVE-2021-41114

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-41114. EPSS is 1.22%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Compare what you have installed with < 11.5.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation; CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax. EPSS 1.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

TYPO3 security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 5, 2021 · Monitored products — high

    Detected

    CVE-2021-41114 is listed by TYPO3 is an open source PHP based web content management system released under the GNU GPL..

  2. Jun 17, 2026 · Monitored products — high

    Updated

    CVE-2021-41114 is listed by TYPO3 is an open source PHP based web content management system released under the GNU GPL..

Sources

  • CVE.orgVulnerability recordCVE-2021-41114

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2021-41114

    TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that TYPO3 CMS is susceptible to host spoofing due to improper validation of the HTTP Host header. TYPO3 uses the HTTP Host header, for example, to generate absolute URLs during the frontend rendering process. Since the host header itself is provided by the client, it can be forged to

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — highNov 4, 2026