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Description

Applications that use GeneralUtility::sanitizeLocalUrl to allow only local URLs are vulnerable to open redirect attacks if the URL is used after it has passed the aforementioned sanitization checks. This enables attackers to redirect users to external content and carry out phishing attacks. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

PUBLISHED Reserved 2026-05-19 | Published 2026-06-09 | Updated 2026-06-09 | Assigner TYPO3




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

Problem types

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

Product status

Default status
unaffected

Any version before 10.4.57
affected

11.0.0 (semver) before 11.5.51
affected

12.0.0 (semver) before 12.4.46
affected

13.0.0 (semver) before 13.4.31
affected

14.0.0 (semver) before 14.3.3
affected

Credits

Alexandre Romao reporter

Benjamin Franzke remediation developer

References

typo3.org/security/advisory/typo3-core-sa-2026-009 vendor-advisory

github.com/...ommit/3ffc0835012c6199db0e1dc4b56a77147d8600e0 (Git commit of main branch) patch

github.com/...ommit/22c2dd5398ebc4cb7aa4aa37e02cb39181dee0cd (Git commit of 13.4 branch) patch

cve.org (CVE-2026-47347)

nvd.nist.gov (CVE-2026-47347)

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