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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2022-36020- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2022-6685
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.
- Record
EUVD-2022-6685- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-47m6-46mj-p235
TYPO3 HTML Sanitizer Bypasses Cross-Site Scripting Protection
Meta
- CVSS:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C(5.7)
Problem
Due to a parsing issue in upstream package masterminds/html5, malicious markup used in a sequence with special HTML comments cannot be filtered and sanitized. This allows to by-pass the cross-site scripting mechanism of typo3/html-sanitizer.
Solution
Update to typo3/html-sanitizer versions 1.0.7 or 2.0.16 that fix the problem described.
Credits
Thanks to David Klein who reported this issue, and to TYPO3 security team member Oliver Hader who fixed the issue.
- Record
GHSA-47m6-46mj-p235- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2022-36020- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2022-36020- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-47m6-46mj-p235
TYPO3 HTML Sanitizer Bypasses Cross-Site Scripting Protection
Meta
- CVSS:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C(5.7)
Problem
Due to a parsing issue in upstream package masterminds/html5, malicious markup used in a sequence with special HTML comments cannot be filtered and sanitized. This allows to by-pass the cross-site scripting mechanism of typo3/html-sanitizer.
Solution
Update to typo3/html-sanitizer versions 1.0.7 or 2.0.16 that fix the problem described.
Credits
Thanks to David Klein who reported this issue, and to TYPO3 security team member Oliver Hader who fixed the issue.
- Record
GHSA-47m6-46mj-p235- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
typo3/html-sanitizerPackagist |
1.0.0 up to 1.0.7 | 1.0.7 |
typo3/html-sanitizerPackagist |
2.0.0 up to 2.0.16 | 2.0.16 |
typo3/cms-corePackagist |
10.0.0 up to 10.4.32 | 10.4.32 |
typo3/cms-corePackagist |
11.0.0 up to 11.5.16 | 11.5.16 |
typo3/cmsPackagist |
10.0.0 up to 10.4.32 | 10.4.32 |
typo3/cmsPackagist |
11.0.0 up to 11.5.16 | 11.5.16 |
typo3/html-sanitizerPackagist |
1.0.0 up to 1.0.7, plus listed versions v1.0.0v1.0.1v1.0.2v1.0.3v1.0.4v1.0.5v1.0.6 |
1.0.7 |
typo3/html-sanitizerPackagist |
2.0.0 up to 2.0.16, plus listed versions v2.0.0v2.0.1v2.0.10v2.0.11v2.0.12 Show 11 moreShow lessv2.0.13v2.0.14v2.0.15v2.0.2v2.0.3v2.0.4v2.0.5v2.0.6v2.0.7v2.0.8v2.0.9 |
2.0.16 |
typo3/cms-corePackagist |
10.0.0 up to 10.4.32, plus listed versions v10.0.0v10.1.0v10.2.0v10.2.1v10.2.2 Show 33 moreShow lessv10.3.0v10.4.0v10.4.1v10.4.10v10.4.11v10.4.12v10.4.13v10.4.14v10.4.15v10.4.16v10.4.17v10.4.18v10.4.19v10.4.2v10.4.20v10.4.21v10.4.22v10.4.23v10.4.24v10.4.25v10.4.26v10.4.27v10.4.28v10.4.29v10.4.3v10.4.30v10.4.31v10.4.4v10.4.5v10.4.6v10.4.7v10.4.8v10.4.9 |
10.4.32 |
typo3/cms-corePackagist |
11.0.0 up to 11.5.16, plus listed versions v11.0.0v11.1.0v11.1.1v11.2.0v11.3.0 Show 20 moreShow lessv11.3.1v11.3.2v11.3.3v11.4.0v11.5.0v11.5.1v11.5.10v11.5.11v11.5.12v11.5.13v11.5.14v11.5.15v11.5.2v11.5.3v11.5.4v11.5.5v11.5.6v11.5.7v11.5.8v11.5.9 |
11.5.16 |
typo3/cmsPackagist |
10.0.0 up to 10.4.32, plus listed versions v10.0.0v10.1.0v10.2.0v10.2.1v10.2.2 Show 33 moreShow lessv10.3.0v10.4.0v10.4.1v10.4.10v10.4.11v10.4.12v10.4.13v10.4.14v10.4.15v10.4.16v10.4.17v10.4.18v10.4.19v10.4.2v10.4.20v10.4.21v10.4.22v10.4.23v10.4.24v10.4.25v10.4.26v10.4.27v10.4.28v10.4.29v10.4.3v10.4.30v10.4.31v10.4.4v10.4.5v10.4.6v10.4.7v10.4.8v10.4.9 |
10.4.32 |
typo3/cmsPackagist |
11.0.0 up to 11.5.16, plus listed versions v11.0.0v11.1.0v11.1.1v11.2.0v11.3.0 Show 20 moreShow lessv11.3.1v11.3.2v11.3.3v11.4.0v11.5.0v11.5.1v11.5.10v11.5.11v11.5.12v11.5.13v11.5.14v11.5.15v11.5.2v11.5.3v11.5.4v11.5.5v11.5.6v11.5.7v11.5.8v11.5.9 |
11.5.16 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-36020 is a medium vulnerability (CVSS 6.1) in Typo3 Html-sanitizer, published September 13, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.84%, the 58th percentile. Fixed in typo3/html-sanitizer 1.0.7.
References
github.com/TYPO3/html-sanitizer/security/advisories/GHSA-47m6-46mj-p235
packagist.org/packages/masterminds/html5
nvd.nist.gov/vuln/detail/CVE-2022-36020
Show 6 moreShow less
typo3.org/security/advisory/typo3-core-sa-2022-011