Is CVE-2026-47347 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-47347 being exploited in the wild.

How severe is CVE-2026-47347?

Medium severity, with a CVSS score of 4, published 9 June 2026.

Which products and versions are affected?

typo3/cms-core (Packagist) ECOSYSTEM:introduced=0,fixed=10.4.57.

Is there a fix for CVE-2026-47347?

Yes. typo3/cms-core (Packagist): upgrade to 10.4.57 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-47347 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-47347?

Check whether you run typo3/cms-core (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-47347: TYPO3 CMS open redirect in GeneralUtility::sanitizeLocalUrl

CVE-2026-47347 · Severity: medium · CVSS 4 · Published 2026-06-09

TYPO3 CMS, a popular content management system, contains a security flaw in how it validates web addresses. An attacker can trick users into clicking a link that appears to stay within the trusted website but instead redirects them to a malicious external site. This is commonly used in phishing campaigns to steal user credentials or distribute malware.

Technologies: typo3/cms-core (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2026-47347 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-47347 being exploited in the wild.
How severe is CVE-2026-47347?: Medium severity, with a CVSS score of 4, published 9 June 2026.
Which products and versions are affected?: typo3/cms-core (Packagist) ECOSYSTEM:introduced=0,fixed=10.4.57.
Is there a fix for CVE-2026-47347?: Yes. typo3/cms-core (Packagist): upgrade to 10.4.57 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-47347 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-47347?: Check whether you run typo3/cms-core (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

typo3/cms-core (Packagist): upgrade to 10.4.57 or later
```
composer require typo3/cms-core:^10.4.57
```

Technical details

An open redirect vulnerability exists in TYPO3 CMS within the `GeneralUtility::sanitizeLocalUrl` function. The root cause is a failure in the sanitization logic intended to restrict URLs to local paths, which can be bypassed to point to external domains. An attacker can exploit this by crafting a URL that, when processed by an application using this utility, redirects a victim to an arbitrary external site. This requires minimal user interaction (clicking a link) and no prior authentication. Patches have been released for all supported branches including ELTS and LTS versions.

Affected products

TYPO3 TYPO3 CMS < 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30, 14.0.0-14.3.2

Identifiers

CVE-2026-47347
GHSA-3p42-w5ch-gg42

Timeline

2026-06-09: disclosed
2026-06-09: patched
2026-06-12: advisory

References

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