Vulnerability · Published Jun 9, 2026 · Assigned by TYPO3

CVE-2026-47347TYPO3 CMS - Open Redirect in Core Utilities

Medium 5.3

In plain English

A medium-severity open redirect in TYPO3 CMS from TYPO3. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.3%top 77.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	typo3/cms-core	10.4.57	GHSA-3p42-w5ch-gg42
Packagist	typo3/cms-core	11.5.51	GHSA-3p42-w5ch-gg42
Packagist	typo3/cms-core	12.4.46	GHSA-3p42-w5ch-gg42
Packagist	typo3/cms-core	13.4.31	GHSA-3p42-w5ch-gg42
Packagist	typo3/cms-core	14.3.3	GHSA-3p42-w5ch-gg42

Affected products (as reported)

Vendor	Product	Versions
TYPO3	TYPO3 CMS	0 – before 10.4.5711.0.0 – before 11.5.5112.0.0 – before 12.4.4613.0.0 – before 13.4.3114.0.0 – before 14.3.3

Weakness: CWE-601 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

References

https://typo3.org/security/advisory/typo3-core-sa-2026-009 vendor-advisory
Git commit of main branch patch
Git commit of 13.4 branch patch