Search vulnerabilities

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Results 6

Export CSV
CVE-2022-23499

Cross-Site Scripting Protection bypass in HTML Sanitizer

HTML sanitizer is written in PHP, aiming to provide XSS-safe markup based on explicitly allowed tags, attributes and values. In versions prior to 1.5.0 or 2.1.1, malicious markup used in a sequence with special HTML CDATA sections cannot be filtered and sanitized due to a parsing issue in the upstream package masterminds/html5. This allows bypassing the cross-site scripting mechanism of typo3/html-sanitizer. The upstream package masterminds/html5 provides HTML raw text elements (`script`, `style`, `noframes`, `noembed` and `iframe`) as DOMText nodes, which were not processed and sanitized further. None of the mentioned elements were defined in the default builder configuration, that's why only custom behaviors, using one of those tag names, were vulnerable to cross-site scripting. This issue has been fixed in versions 1.5.0 and 2.1.1.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Typo3
Products
Html Sanitizer
CVE-2026-47345

TYPO3 HTML Sanitizer allows Cross-Site Scripting

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.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Typo3
Products
Html Sanitizer
CVE-2026-47344

TYPO3 HTML Sanitizer allows Cross-Site Scripting

When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant closing tags (e.g., </style\t>) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.

CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed
Vendors
Typo3
Products
Html Sanitizer
CVE-2022-36020

Bypass of Cross-Site Scripting Protection in typo3/html-sanitizer

The typo3/html-sanitizer package is an HTML sanitizer, written in PHP, aiming to provide XSS-safe markup based on explicitly allowed tags, attributes and values. Due to a parsing issue in the upstream package `masterminds/html5`, malicious markup used in a sequence with special HTML comments cannot be filtered and sanitized. This allows for a bypass of the cross-site scripting mechanism of `typo3/html-sanitizer`. This issue has been addressed in versions 1.0.7 and 2.0.16 of the `typo3/html-sanitizer` package. Users are advised to upgrade. There are no known workarounds for this issue.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Typo3
Products
Html Sanitizer
CVE-2023-47125

By-passing Cross-Site Scripting Protection in HTML Sanitizer

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions DOM processing instructions are not handled correctly. This allows bypassing the cross-site scripting mechanism of typo3/html-sanitizer. This vulnerability has been addressed in versions 1.5.3 and 2.1.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Typo3
Products
Html Sanitizer Typo3
CVE-2023-38500

By-passing Cross-Site Scripting Protection in HTML Sanitizer

TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to provide cross-site-scripting-safe markup based on explicitly allowed tags, attributes and values. Starting in version 1.0.0 and prior to versions 1.5.1 and 2.1.2, due to an encoding issue in the serialization layer, malicious markup nested in a `noscript` element was not encoded correctly. `noscript` is disabled in the default configuration, but might have been enabled in custom scenarios. This allows bypassing the cross-site scripting mechanism of TYPO3 HTML Sanitizer. Versions 1.5.1 and 2.1.2 fix the problem.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Typo3
Products
Html Sanitizer