TYPO3 Cross-Site Scripting in Link Handling
Priority LOW 38CWE-79Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-79.
Summary
It has been discovered that `t3://` URL handling and typolink functionality are vulnerable to cross-site scripting. Not only regular backend forms are affected but also frontend extensions which use the rendering with typolink.
Why it matters now
Fix Fixed typo3/cms (Packagist): 10.2.1, 8.7.30, 9.5.12
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | typo3/cms (Packagist) | 10.0.0 to before 10.2.1 | 10.2.1 | Patch available | GHSA-xgmx-j3hv-jh9x |
| — | typo3/cms (Packagist) | 8.0.0 to before 8.7.30 | 8.7.30 | Patch available | GHSA-xgmx-j3hv-jh9x |
| — | typo3/cms (Packagist) | 9.0.0 to before 9.5.12 | 9.5.12 | Patch available | GHSA-xgmx-j3hv-jh9x |
- typo3/cms (Packagist) Vendor— Affected 10.0.0 to before 10.2.1 Fixed in 10.2.1 Patch available GHSA-xgmx-j3hv-jh9x
- typo3/cms (Packagist) Vendor— Affected 8.0.0 to before 8.7.30 Fixed in 8.7.30 Patch available GHSA-xgmx-j3hv-jh9x
- typo3/cms (Packagist) Vendor— Affected 9.0.0 to before 9.5.12 Fixed in 9.5.12 Patch available GHSA-xgmx-j3hv-jh9x
Remediation
- Fix · GHSA-xgmx-j3hv-jh9x typo3/cms (Packagist) Fixed in 10.2.1 Advisory →
- Fix · GHSA-xgmx-j3hv-jh9x typo3/cms (Packagist) Fixed in 8.7.30 Advisory →
- Fix · GHSA-xgmx-j3hv-jh9x typo3/cms (Packagist) Fixed in 9.5.12 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-xgmx-j3hv-jh9x
References
Other 6
- https://github.com/TYPO3/typo3/commit/25f796b94e23bac77e836bd38f53ce998c094901
- https://github.com/TYPO3/typo3/commit/64db88b9b61bb67b3b44145dc8e0e1ef251da45e
- https://github.com/TYPO3/typo3/commit/a35c42e9bcb020e16016d1c146354513a9856bc0
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2019-12-17-2.yaml
- https://github.com/TYPO3/typo3
- https://typo3.org/security/advisory/typo3-core-sa-2019-022
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences