How severe is GHSA-9pr3-7449-977r?

No CVSS score has been assigned to GHSA-9pr3-7449-977r yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-9pr3-7449-977r?

GHSA-9pr3-7449-977r affects the following packages: express-cart (npm). Ecosystems affected: npm.

How do I fix GHSA-9pr3-7449-977r?

The records we use list no patched version of express-cart for GHSA-9pr3-7449-977r. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

How do I detect GHSA-9pr3-7449-977r in my npm dependencies?

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

How do I mitigate GHSA-9pr3-7449-977r if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is GHSA-9pr3-7449-977r actively exploited in the wild?

No public exploit code has been indexed for GHSA-9pr3-7449-977r 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-9pr3-7449-977r published, and has it been updated?

GHSA-9pr3-7449-977r was published on September 2, 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

Cross-Site Scripting in express-cartGHSA-9pr3-7449-977r

GHSA-9pr3-7449-977r is a remote code execution vulnerability in express-cart. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Published

Sep 2, 2020

Updated

Aug 31, 2020

Affected

1 pkg

Patched

None yet

Exploits

None indexed

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

Real-World Exposure

1 pkg 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.

1other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

express-cartnpm

126downloads / week

Description

All versions of harp are vulnerable to Cross-Site Scripting. In the admin page it is possible to inject arbitrary JavaScript as a new product option, allowing attackers to execute arbitrary code. This is limited to the admin page and does not affect other pages.

Recommendation

No fix is currently available. Consider using an alternative module until a fix is made available.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
📦npm	`express-cart`	all versions	No fix

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for express-cart, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of express-cart for GHSA-9pr3-7449-977r. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

All versions of `harp` are vulnerable to Cross-Site Scripting. In the admin page it is possible to inject arbitrary JavaScript as a new product option, allowing attackers to execute arbitrary code. This is limited to the admin page and does not affect other pages. ## Recommendation No fix is currently available. Consider using an alternative module until a fix is made available.

O3 Security · Impact-Aware SCA

Is GHSA-9pr3-7449-977r in your dependencies?

Find it across npm, including transitive dependencies.

Scan my dependencies How O3 SCA works