TYPO3 published TYPO3-CORE-SA-2026-019 for CVE-2026-11607, a High severity Form Framework access-control issue that can let a backend user with form access process a crafted form definition and escalate to an administrative backend account. TYPO3 lists fixed releases for every supported and ELTS branch, so this is a backup-first patch window for any agency, host, or site owner running TYPO3 forms.
Before touching production, back up the database, site files, Composer lock file, public file storage, and TYPO3 configuration. Confirm the restore path first, then update a staging copy and verify forms, editor access, scheduler tasks, and frontend submission paths before deploying.
What TYPO3 Published
- Advisory: TYPO3-CORE-SA-2026-019: Broken Access Control in Form Framework.
- CVE: CVE-2026-11607.
- Severity: TYPO3 rates the issue High.
- Affected branches: TYPO3 10.0.0-10.4.56, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30, and 14.0.0-14.3.2.
- Fixed releases: TYPO3 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, and 14.3.3 LTS.
Admin Checklist
- Inventory TYPO3 sites that use the Form Framework or delegate form editing to non-admin backend users.
- Back up production and update the matching TYPO3 branch in staging first.
- Confirm that custom forms still load, submit, send mail, and write records as expected.
- Review backend user groups that can edit or import forms, especially on client-managed installs.
- After the update, clear TYPO3 caches and review application logs for form-related warnings.
- If a site cannot update immediately, restrict form-editing rights to trusted administrators until the maintenance window is complete.
Hosting Notes
The practical risk is not every public visitor hitting every TYPO3 site. The important exposure is delegated backend access: editors, client staff, or compromised backend accounts with form permissions. Hosts and agencies should prioritize shared TYPO3 environments, long-lived client portals, and installs where backend roles have accumulated broad permissions over time.
Do not publish test details or raw form examples. The useful customer-facing advice is simple: patch to the fixed TYPO3 branch, reduce unnecessary form-editing rights, and verify that business-critical forms still work after cache clears.
