Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| TYPO3 | html-sanitizer | >= 1.0.0, < 1.0.7, >= 2.0.0, < 2.0.16 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms | >= 10.0.0, < 10.4.32 | 10.4.32 | GHSA-47m6-46mj-p235 |
| Packagist | typo3/cms | >= 11.0.0, < 11.5.16 | 11.5.16 | GHSA-47m6-46mj-p235 |
| Packagist | typo3/cms-core | >= 10.0.0, < 10.4.32 | 10.4.32 | GHSA-47m6-46mj-p235 |
| Packagist | typo3/cms-core | >= 11.0.0, < 11.5.16 | 11.5.16 | GHSA-47m6-46mj-p235 |
| Packagist | typo3/html-sanitizer | >= 1.0.0, < 1.0.7 | 1.0.7 | GHSA-47m6-46mj-p235 |
| Packagist | typo3/html-sanitizer | >= 2.0.0, < 2.0.16 | 2.0.16 | GHSA-47m6-46mj-p235 |