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VulnerabilityPublished Updated

CVE-2026-47351: TYPO3 CMS · Missing Authorization

Affects TYPO3 CMSSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium : upgrade to 14.3.3 or 13.4.31 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 14.3.3, 13.4.31
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade TYPO3 CMS and typo3/typo3 and typo3/cms-backend to 14.3.3 or 13.4.31.

Affected software

ProductAffectedFixed in
TYPO3TYPO3 CMSAffected
  • >=14.0.0 <14.3.3
Fixed in
  • 14.3.3
TYPO3TYPO3 CMSAffected
  • >=10.4.0 <13.4.31
Fixed in
  • 13.4.31
GitHubtypo3/typo3pkg:github/typo3/typo3Other threatsAffected
  • 10.4.0 <13.4.31
  • 14.0.0 <14.3.3
Fixed in
  • 13.4.31
  • 14.3.3
Packagisttypo3/cms-backendpkg:composer/typo3/cms-backendOther threatsAffected
  • >=10.4.0 <13.4.31
  • >=14.0.0 <14.3.3
Fixed in
  • 13.4.31
  • 14.3.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, restrict backend user permissions to minimize exposure.

Description

Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read permission checks, which allowed users to gather information about records and files they were not authorized to view. This issue affects TYPO3 CMS versions 10.4.0-13.4.30 and 14.0.0-14.3.2.

References

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