Advisory details:
github_osv / GHSA-hwvq-2w67-rvxp
| Advisory ID | github_osv/GHSA-hwvq-2w67-rvxp |
| Aliases |
CVE-2026-47346
|
| Summary | TYPO3 CMS has Broken Access Control in its Form Framework ### 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) |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 6.8 |
| Risk | 3.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-178 | Improper Handling of Case Sensitivity |
| CWE-862 | Missing Authorization |
| System | Score | Found at |
|---|---|---|
| cvssv4 | 7.6 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-hwvq-2w67-rvxp/GHSA-hwvq-2w67-rvxp.json |
| generic_textual | HIGH |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47346.yaml | ||
| https://github.com/TYPO3/typo3 | ||
| https://github.com/TYPO3/typo3/security/advisories/GHSA-hwvq-2w67-rvxp | ||
| 2030617e6f273cee7b756c695f0a48a45a31eb47 | Other | https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47 |
| CVE-2026-47346 | https://nvd.nist.gov/vuln/detail/CVE-2026-47346 | |
| eb2b2251d90339d3ab55df3d4c0378ae0c780b45 | Other | https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45 |
| typo3-core-sa-2026-008 | Advisory | https://typo3.org/security/advisory/typo3-core-sa-2026-008 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Attack Requirements (AT) | Privileges Required (PR) | User Interaction (UI) | Vulnerable System Impact Confidentiality (VC) | Vulnerable System Impact Integrity (VI) | Vulnerable System Impact Availability (VA) | Subsequent System Impact Confidentiality (SC) | Subsequent System Impact Integrity (SI) | Subsequent System Impact Availability (SA) |
|---|---|---|---|---|---|---|---|---|---|---|
network adjacent local physical |
low high |
none present |
none low high |
none passive active |
high low none |
high low none |
high low none |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-06-09T12:51:14Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/47xxx/CVE-2026-47346.json
Source Advisory: vulnrichment/CVE-2026-47346
[{'Exploitation': 'none'},
{'Automatable': 'no'},
{'Technical Impact': 'total'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]