Description
Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.
Published: 2026-06-08
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-p5j5-4j3q-8mq8 TYPO3 HTML Sanitizer allows Cross-site Scripting
History

Mon, 08 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 08 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
Description Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.
Title TYPO3 HTML Sanitizer allows Cross-Site Scripting
First Time appeared Typo3
Typo3 html Sanitizer
Weaknesses CWE-79
CPEs cpe:2.3:a:typo3:html_sanitizer:*:*:*:*:*:*:*:*
Vendors & Products Typo3
Typo3 html Sanitizer
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Subscriptions

Typo3 Html Sanitizer
cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-06-08T19:49:59.995Z

Reserved: 2026-05-19T12:49:25.966Z

Link: CVE-2026-47345

cve-icon Vulnrichment

Updated: 2026-06-08T19:49:50.720Z

cve-icon NVD

Status : Deferred

Published: 2026-06-08T20:17:01.743

Modified: 2026-06-09T13:46:50.540

Link: CVE-2026-47345

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-08T20:30:06Z

Weaknesses