CVE-2019-19848
HIGHCVE-2019-19848 is a high-severity (CVSS 7.2) Path Traversal vulnerability in typo3/cms-core. O3 Security confirms whether CVE-2019-19848 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
TYPO3 Directory Traversal on ZIP extraction
Blast Radius
typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms🐘typo3/cms🐘typo3/cmsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
An issue was discovered in TYPO3 before 8.7.30, 9.x before 9.5.12, and 10.x before 10.2.2. It has been discovered that the extraction of manually uploaded ZIP archives in Extension Manager is vulnerable to directory traversal. Admin privileges are required in order to exploit this vulnerability. (In v9 LTS and later, System Maintainer privileges are also required.)
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | typo3/cms-core | ≥ 10.0.0&&< 10.2.2 | 10.2.2 |
| 🐘Packagist | typo3/cms-core | ≥ 8.0.0&&< 8.7.30 | 8.7.30 |
| 🐘Packagist | typo3/cms-core | ≥ 9.0.0&&< 9.5.12 | 9.5.12 |
| 🐘Packagist | typo3/cms | ≥ 10.0.0&&< 10.2.2 | 10.2.2 |
| 🐘Packagist | typo3/cms | ≥ 8.0.0&&< 8.7.30 | 8.7.30 |
| 🐘Packagist | typo3/cms | ≥ 9.0.0&&< 9.5.12 | 9.5.12 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms-core. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update typo3/cms-core to 10.2.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-19848 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2019-19848 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2019-19848. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2019-19848 in your dependencies?
O3 detects CVE-2019-19848 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.