How severe is GHSA-q3w9-g74q-vp5f?

No CVSS score has been assigned to GHSA-q3w9-g74q-vp5f yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-q3w9-g74q-vp5f?

GHSA-q3w9-g74q-vp5f affects the following packages: express-fileupload (npm), express-fileupload (npm), express-fileupload (npm), express-fileupload (npm), express-fileupload (npm). Ecosystems affected: npm.

How do I fix GHSA-q3w9-g74q-vp5f?

Update express-fileupload to 1.1.6-alpha.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q3w9-g74q-vp5f is resolved across your whole dependency graph.

How do I detect GHSA-q3w9-g74q-vp5f in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for express-fileupload, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-q3w9-g74q-vp5f if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is GHSA-q3w9-g74q-vp5f actively exploited in the wild?

No public exploit code has been indexed for GHSA-q3w9-g74q-vp5f yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-q3w9-g74q-vp5f published, and has it been updated?

GHSA-q3w9-g74q-vp5f was published on September 3, 2020 and was last updated on August 31, 2020. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

Denial of Service in express-fileuploadGHSA-q3w9-g74q-vp5f

GHSA-q3w9-g74q-vp5f is a security vulnerability in express-fileupload. A fix is available for express-fileupload — see the affected versions and patch details below.

Published

Sep 3, 2020

Updated

Aug 31, 2020

Affected

5 pkgs

Patched

5 / 5

Exploits

None indexed

Exploitation data as of Aug 31, 2020 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

5 pkgs affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

941other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

express-fileuploadnpm

650Kdownloads / week

Description

Versions of express-fileupload prior to 1.1.6-alpha.6 are vulnerable to Denial of Service. The package causes server responses to be delayed (up to 30s in internal testing) if the request contains a large filename of . characters.

Recommendation

Upgrade to version 1.1.6-alpha.6 or later.

Affected Packages

5 total 5 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`express-fileupload`	all versions	1.1.6-alpha.6`npm install express-fileupload@1.1.6-alpha.6`
📦npm	`express-fileupload`	all versions	1.1.6-alpha.6`npm install express-fileupload@1.1.6-alpha.6`
📦npm	`express-fileupload`	all versions	1.1.6-alpha.6`npm install express-fileupload@1.1.6-alpha.6`
📦npm	`express-fileupload`	all versions	1.1.6-alpha.6`npm install express-fileupload@1.1.6-alpha.6`
📦npm	`express-fileupload`	all versions	1.1.6-alpha.6`npm install express-fileupload@1.1.6-alpha.6`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for express-fileupload, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update express-fileupload to 1.1.6-alpha.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q3w9-g74q-vp5f is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

Versions of `express-fileupload` prior to 1.1.6-alpha.6 are vulnerable to Denial of Service. The package causes server responses to be delayed (up to 30s in internal testing) if the request contains a large `filename` of `.` characters. ## Recommendation Upgrade to version 1.1.6-alpha.6 or later.

O3 Security · Impact-Aware SCA

Is GHSA-q3w9-g74q-vp5f in your dependencies?

Find it across npm, including transitive dependencies.

Scan my dependencies How O3 SCA works