CVE-2021-32669 json
Cross-Site Scripting in Backend Grid View
published 2021-07-20 5 y ago modified 2026-09-10 1 mo ago also BIT-typo3-2021-32669 , EUVD-2021-1488 , GHSA-rgcg-28xm-8mmw
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
TYPO3 is an open source PHP based web content management system. Versions 9.0.0 through 9.5.28, 10.0.0 through 10.4.17, and 11.0.0 through 11.3.0 have a cross-site scripting vulnerability. When settings for _backend layouts_ are not properly encoded, the corresponding grid view is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. TYPO3 versions 9.5.29, 10.4.18, 11.3.1 contain a patch for this vulnerability.
Patch / fix
- packagist typo3/cms-core 8.7.41, 9.5.28, 10.4.18, 11.3.1
- packagist typo3/cms 9.5.28, 10.4.18, 11.3.1
- bitnami typo3 8.7.40, 9.5.28, 10.4.17, 11.3.0
Exploit prediction
0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| OSV | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | typo3/cms-core | >=8.0.0, <8.7.41 >=9.0.0, <9.5.28 >=10.0.0, <10.4.18 >=11.0.0, <11.3.1 |
8.7.41 9.5.28 10.4.18 11.3.1 |
| packagist | typo3/cms | >=10.0.0, <10.4.18 >=11.0.0, <11.3.1 >=9.0.0, <9.5.28 |
10.4.18 11.3.1 9.5.28 |
| bitnami | typo3 | >=8.0.0, <8.7.40 >=9.0.0, <9.5.28 >=10.0.0, <10.4.17 >=11.0.0, <11.3.0 |
8.7.40 9.5.28 10.4.17 11.3.0 |
Affected products
- TYPO3 TYPO3.CMS
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
typo3.org
/security/advisory/typo3-core-sa-2021-011
web, vendor-advisory
-
github.com
/TYPO3/TYPO3.CMS/security/advisories/GHSA-rgcg-28xm-8mmw
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-32669
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32669.yaml
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32669.yaml
web
Sources
- CVE List CVE-2021-32669
- GitHub Advisory GHSA-rgcg-28xm-8mmw
- NVD CVE-2021-32669
- OSV BIT-typo3-2021-32669
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