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| purl | pkg:composer/typo3/cms-core@7.6.52 |
| Tags | Ghost |
| Next non-vulnerable version | None. |
| Latest non-vulnerable version | None. |
| Risk | 3.1 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-tvq8-qbwc-qkfs
Aliases: CVE-2021-32768 GHSA-c5c9-8c6m-727v |
Cross-Site Scripting via Rich-Text Content > ### 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` (5.7) ### Problem Failing to properly parse, sanitize and encode malicious rich-text content, the content rendering process in the website frontend is vulnerable to cross-site scripting. Corresponding rendering instructions via TypoScript functionality _[HTMLparser](https://docs.typo3.org/m/typo3/reference-typoscript/10.4/en-us/Functions/Htmlparser.html)_ do not consider all potentially malicious HTML tag & attribute combinations per default. In addition, the lack of comprehensive default node configuration for rich-text fields in the backend user interface fosters this malfunction. In default scenarios, a valid backend user account is needed to exploit this vulnerability. In case custom plugins used in the website frontend accept and reflect rich-text content submitted by users, no authentication is required. ### Solution Update to TYPO3 versions 7.6.53 ELTS, 8.7.42 ELTS, 9.5.29, 10.4.19, 11.3.2 that fix the problem described above. Custom package _[typo3/html-sanitizer](https://github.com/TYPO3/html-sanitizer)_ - based on allow-lists only - takes care of sanitizing potentially malicious markup. The default behavior is based on safe and commonly used markup - however, this can be extended or restricted further in case it is necessary for individual scenarios. During the frontend rendering process, sanitization is applied to the default TypoScript path `lib.parseFunc`, which is implicitly used by the Fluid view-helper instruction `f:format.html`. Rich-text data persisted using the backend user interface is sanitized as well. Implementation details are explained in corresponding [ChangeLog documentation](https://docs.typo3.org/c/typo3/cms-core/master/en-us/Changelog/9.5.x/Important-94484-IntroduceHTMLSanitizer.html). ### Credits Thanks to Benjamin Stiber, Gert-Jan Jansma, Gábor Ács-Kurucz, Alexander Kellner, Richie Lee, Nina Rösch who reported this issue, and to TYPO3 security team member Oliver Hader, as well as TYPO3 contributor Susanne Moog who fixed the issue. ### References * [TYPO3-CORE-SA-2021-013](https://typo3.org/security/advisory/typo3-core-sa-2021-013) |
Affected by 0 other vulnerabilities. Affected by 0 other vulnerabilities. Affected by 23 other vulnerabilities. Affected by 27 other vulnerabilities. Affected by 29 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| This package is not known to fix vulnerabilities. | ||
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2025-07-03T16:52:03.419418+00:00 | GHSA Importer | Fixing | VCID-rmnv-emnu-6bfy | https://github.com/advisories/GHSA-34fr-fhqr-7235 | 37.0.0 |
| 2025-07-01T18:11:48.878938+00:00 | GitLab Importer | Affected by | VCID-tvq8-qbwc-qkfs | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/typo3/cms-core/CVE-2021-32768.yml | 36.1.3 |
| 2025-07-01T12:19:30.685168+00:00 | GithubOSV Importer | Fixing | VCID-rmnv-emnu-6bfy | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/07/GHSA-34fr-fhqr-7235/GHSA-34fr-fhqr-7235.json | 36.1.3 |