CVE-2018-14065 is a critical-severity (CVSS 9.8) XML External Entity (XXE) vulnerability in phpoffice/common. A fix is available for phpoffice/common — see the affected versions and patch details below.
PHPOffice Common Improper Restriction of XML External Entity Reference
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
phpoffice/commonReal-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
XMLReader.php in PHPOffice Common before 0.2.9 allows XXE.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | phpoffice/common | all versions | 0.2.9composer require phpoffice/common:^0.2.9 |
Affected Products
commonphpoffice_projectDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpoffice/common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update phpoffice/common to 0.2.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-14065 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.
Frequently Asked Questions
Is CVE-2018-14065 in your dependencies?
Find it across Packagist, including transitive dependencies.