CVE-2022-23499 — Cross-site Scripting in Html Sanitizer

CWE-79 — Cross-site Scripting4 documents4 sources
Severity
6.1MEDIUMNVD
EPSS
0.2%
top 53.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Typo3 Html SanitizerTypo3 CMSTypo3 Html-sanitizer
Timeline
PublishedDec 13

Description

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…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitability: 2.8 | Impact: 2.7

Affected Packages4 packages

▶NVDtypo3/html_sanitizer2.0.0 — 2.1.1+1
▶Packagisttypo3/html-sanitizer1.0.0 — 1.5.0+1
▶CVEListV5typo3/html-sanitizer>= 1.0.0, < 1.5.0, >= 2.0.0, < 2.1.1+1
▶Packagisttypo3/cms10.0.0 — 10.4.33+2

🔴Vulnerability Details

3
CVEList
Cross-Site Scripting Protection bypass in HTML Sanitizer↗2022-12-13
▶
GHSA
TYPO3 HTML Sanitizer vulnerable to Cross-Site Scripting↗2022-12-13
▶
OSV
TYPO3 HTML Sanitizer vulnerable to Cross-Site Scripting↗2022-12-13
▶
CVE-2022-23499 — Cross-site Scripting in Html Sanitizer | cvebase