How severe is GHSA-4cj8-g9cp-v5wr?

GHSA-4cj8-g9cp-v5wr has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-4cj8-g9cp-v5wr?

GHSA-4cj8-g9cp-v5wr affects the following packages: blueimp-file-upload (npm). Ecosystems affected: npm.

How do I fix GHSA-4cj8-g9cp-v5wr?

Update blueimp-file-upload to version 9.22.1 or later. Run your dependency manager's update command and verify no transitive dependencies pin the vulnerable version. Use O3 Security's SCA scanner to confirm the fix is applied across your entire dependency tree.

Is GHSA-4cj8-g9cp-v5wr actively exploited in the wild?

Yes. There are 17 known exploit references for GHSA-4cj8-g9cp-v5wr, including 3 documented proof-of-concept exploits on Exploit-DB and 11 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-4cj8-g9cp-v5wr?

GHSA-4cj8-g9cp-v5wr has an EPSS (Exploit Prediction Scoring System) score of 93.8%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is GHSA-4cj8-g9cp-v5wr?

GHSA-4cj8-g9cp-v5wr is classified as Unrestricted File Upload (CWE-434). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Is there exploit tooling available for GHSA-4cj8-g9cp-v5wr?

A Nuclei detection template exists for GHSA-4cj8-g9cp-v5wr, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was GHSA-4cj8-g9cp-v5wr published, and has it been updated?

GHSA-4cj8-g9cp-v5wr was published on October 22, 2018 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

GHSA-4cj8-g9cp-v5wr

CRITICAL

Unrestricted Upload of File with Dangerous Type in blueimp-file-upload

Also known asCVE-2018-9206

Published

Oct 22, 2018

Updated

Nov 8, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

17 known

EPSS Exploitation Probability

via FIRST.org ↗

93.8%probability of exploitation in next 30 days

Very High Risk100th percentile+0.03%

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.

Blast Radius

1 pkg affected

📦blueimp-file-upload

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.

Description

Unauthenticated arbitrary file upload vulnerability in Blueimp jQuery-File-Upload <= v9.22.0

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`blueimp-file-upload`	all versions	9.22.1

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-45584webappsphp✓ Verified

jQuery-File-Upload 9.22.0 - Arbitrary File Upload

by Larry W. Cashdollar · Oct 11, 2018

Exploit-DB Source

EDB-46182webappsphp

Blueimp's jQuery File Upload 9.22.0 - Arbitrary File Upload Exploit

by Larry W. Cashdollar · Jan 16, 2019

Exploit-DB Source

EDB-45790remotephp✓ Verified

blueimp's jQuery 9.22.0 - (Arbitrary) File Upload (Metasploit)

by Metasploit · Nov 6, 2018

Exploit-DB Source

Frequently Asked Questions

Unauthenticated arbitrary file upload vulnerability in Blueimp jQuery-File-Upload <= v9.22.0

O3 Security · Impact-Aware SCA

Is GHSA-4cj8-g9cp-v5wr in your stack?

O3 detects GHSA-4cj8-g9cp-v5wr across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works