CVE-2026-47347: CWE-601 URL Redirection to Untrusted Site ('Open Redirect') in TYPO3 TYPO3 CMS
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.
AI Analysis
Technical Summary
The vulnerability in TYPO3 CMS arises from the use of GeneralUtility::sanitizeLocalUrl to restrict URLs to local destinations. However, if the sanitized URL is subsequently used without additional validation, it can be exploited to perform open redirect attacks. This enables attackers to redirect users to untrusted external websites, increasing the risk of phishing. Affected TYPO3 CMS versions include all releases before 10.4.57, 11.0.0 through 11.5.50, 12.0.0 through 12.4.45, 13.0.0 through 13.4.30, and 14.0.0 through 14.3.2. No official remediation level or patch information is provided in the available data.
Potential Impact
Successful exploitation allows attackers to redirect users from trusted TYPO3 CMS sites to external malicious sites, potentially facilitating phishing attacks. There is no indication of privilege escalation, data disclosure, or code execution. The impact is limited to user redirection and associated phishing risks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid relying solely on GeneralUtility::sanitizeLocalUrl for URL validation and implement additional validation to ensure URLs are strictly local. Monitor TYPO3 vendor advisories for patches addressing this vulnerability.
CVE-2026-47347: CWE-601 URL Redirection to Untrusted Site ('Open Redirect') in TYPO3 TYPO3 CMS
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.
CVSS v4.0
Score 5.3medium
Affected software
pkg:github/typo3/typo3Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in TYPO3 CMS arises from the use of GeneralUtility::sanitizeLocalUrl to restrict URLs to local destinations. However, if the sanitized URL is subsequently used without additional validation, it can be exploited to perform open redirect attacks. This enables attackers to redirect users to untrusted external websites, increasing the risk of phishing. Affected TYPO3 CMS versions include all releases before 10.4.57, 11.0.0 through 11.5.50, 12.0.0 through 12.4.45, 13.0.0 through 13.4.30, and 14.0.0 through 14.3.2. No official remediation level or patch information is provided in the available data.
Potential Impact
Successful exploitation allows attackers to redirect users from trusted TYPO3 CMS sites to external malicious sites, potentially facilitating phishing attacks. There is no indication of privilege escalation, data disclosure, or code execution. The impact is limited to user redirection and associated phishing risks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid relying solely on GeneralUtility::sanitizeLocalUrl for URL validation and implement additional validation to ensure URLs are strictly local. Monitor TYPO3 vendor advisories for patches addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TYPO3
- Date Reserved
- 2026-05-19T12:49:25.966Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a27f83d8dd33fbd8526d7ec
Added to database: 06/09/2026, 11:25:49 UTC
Last enriched: 06/10/2026, 10:10:13 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 58
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