CVE-2026-19418
- Source
- https://cve.org/CVERecord?id=CVE-2026-19418
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-19418.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-19418
- Published
- 2026-08-11T07:29:37.478Z
- Modified
- 2026-08-15T04:25:19.556809190Z
- Severity
-
- 7.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- TYPO3 CMS - Broken Access Control in Backend and Install Tool
- Details
-
The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 (CVE-2020-11069) became ineffective in TYPO3 v13.0, where TYPO3 CMS started serving the backend and Install Tool applications from the site's main entry script instead of the dedicated typo3/ directory.
Whether a request originated from the backend or Install Tool itself was determined by comparing the referrer against the directory of the entry script, which since then is the site root. As a consequence, requests originating from any script running on one of the TYPO3 instance's own domains, such as a frontend page, were accepted by backend routes and Install Tool endpoints.
Attackers able to execute JavaScript on one of those domains, for instance by exploiting a cross-site scripting vulnerability, could invoke these endpoints via Fetch/XHR with the privileges of an authenticated victim's user session. This issue affects TYPO3 CMS versions 13.0.0-13.4.33 and 14.0.0-14.3.5.
- Database specific
{ "cwe_ids": [ "CWE-346", "CWE-352" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19418.json", "cna_assigner": "TYPO3" }- References
-
- https://packagist.org
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19418.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-19418
- https://typo3.org/security/advisory/typo3-core-sa-2020-006
- https://typo3.org/security/advisory/typo3-core-sa-2026-021
- https://github.com/TYPO3/typo3/commit/4a75e862c589c85d795d7c65dcdc835f8f413efc
- https://github.com/TYPO3/typo3/commit/a0e8ee06a40e959b9e7b06a4b1cb19d3a0d3dcf7
- https://github.com/TYPO3/typo3/commit/ae0abd329d52285fe6e92804c3608820ad45e872
- https://github.com/TYPO3/typo3
Affected packages
Git / github.com/typo3/typo3
Affected ranges
- Type
- GIT
- Repo
- https://github.com/typo3/typo3
- Events
-
IntroducedIntroducedFixedFixedFixedFixedFixed
- Database specific
-
Show details
{ "source": [ "AFFECTED_FIELD", "REFERENCES" ], "extracted_events": [ { "introduced": "13.0.0" }, { "fixed": "13.4.34" }, { "introduced": "14.0.0" }, { "fixed": "14.3.6" } ] }