CVE-2014-8739
CVE-2014-8739 is a Unrestricted File Upload vulnerability in blueimp/jquery-file-upload. 5 public exploit references exist, so weaponization risk is real. O3 Security confirms whether CVE-2014-8739 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
jQuery File Upload Plugin Unrestricted file upload vulnerability
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Real-World Exposure
blueimp/jquery-file-uploadReal-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
Unrestricted file upload vulnerability in server/php/UploadHandler.php in the jQuery File Upload Plugin 6.4.4 for jQuery, as used in the Creative Solutions Creative Contact Form (formerly Sexy Contact Form) before 1.0.0 for WordPress and before 2.0.1 for Joomla!, allows remote attackers to execute arbitrary code by uploading a PHP file with an PHP extension, then accessing it via a direct request to the file in files/, as exploited in the wild in October 2014.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | blueimp/jquery-file-upload | all versions | No fix |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
WordPress Plugin Creative Contact Form - Arbitrary File Upload (Metasploit)
by Metasploit · Apr 21, 2015
WordPress Plugin 0.9.7 / Joomla! Component 2.0.0 Creative Contact Form - Arbitrary File Upload
by Claudio Viviani · Oct 25, 2014
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for blueimp/jquery-file-upload. 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.
Remediation status
No patched version of blueimp/jquery-file-upload has shipped for CVE-2014-8739 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-2014-8739 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-2014-8739. 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-2014-8739 in your dependencies?
O3 detects CVE-2014-8739 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.