Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-gqqf-g5r7-84vf
Advisory ID github_osv/GHSA-gqqf-g5r7-84vf
Aliases
Summary 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`](https://packagist.org/packages/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`](https://github.com/TYPO3/html-sanitizer). ### Solution Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix the problem described above. ### Credits Thanks to David Klein who reported this issue, and to TYPO3 security team member Oliver Hader who fixed the issue. ### References * [TYPO3-CORE-SA-2022-011](https://typo3.org/security/advisory/typo3-core-sa-2022-011) * [GHSA-47m6-46mj-p235](https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-47m6-46mj-p235)
Status Published
Exploitability 0.5
Weighted Severity 5.5
Risk 2.8
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 6.1 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-gqqf-g5r7-84vf/GHSA-gqqf-g5r7-84vf.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/TYPO3/typo3
https://github.com/TYPO3/typo3/commit/d4f260570abd934fcf3819370a135bef33d729b7
GHSA-gqqf-g5r7-84vf https://github.com/TYPO3/typo3/security/advisories/GHSA-gqqf-g5r7-84vf
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-gqqf-g5r7-84vf/GHSA-gqqf-g5r7-84vf.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.