CVE-2026-47346
highpriority · track · 0OT risk · elevatedEPSS 0.003 · 17 %ileDEEUUSEPSS · scored 2026-10-27
Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.6
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (25)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1835TYPO3 Core: Mehrere SchwachstellenDeutsch2026-06-08csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in TYPO3 Core ausnutzen, um Sicherheitsbeschränkungen zu umgehen, Benutzer auf schädliche Websites umzuleiten, beliebigen Code auszuführen, Berechtigungen zu eskalieren oder andere Auswirkungen zu verursachen.
- GHSA-hwvq-2w67-rvxpTYPO3 CMS has Broken Access Control in its Form Framework2026-06-12ghsa · osvUS
### Problem Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., `.FORM.YAML`) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. ### Solution Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described. ### Credits TYPO3 CMS thanks Alexander Künzl for reporting this issue, and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke for fixing it. ### Resources * [TYPO3-CORE-SA-2026-008](https://typo3.org/security/advisory/typo3-core-sa-2026-008)
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-47346cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-47346cnnvd
- https://typo3.org/security/advisory/typo3-core-sa-2026-008Patchcnnvd
- https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47enisa_euvd
- https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45enisa_euvd
- https://typo3.org/security/advisory/typo3-core-sa-2026-008enisa_euvd
- https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47nvd
- https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45nvd
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