How severe is GHSA-fvwr-h9xh-m6wc?

No CVSS score has been assigned to GHSA-fvwr-h9xh-m6wc yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-fvwr-h9xh-m6wc?

GHSA-fvwr-h9xh-m6wc affects the following packages: @commercial/subtext (npm). Ecosystems affected: npm.

How do I fix GHSA-fvwr-h9xh-m6wc?

Update @commercial/subtext to 5.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fvwr-h9xh-m6wc is resolved across your whole dependency graph.

How do I detect GHSA-fvwr-h9xh-m6wc in my npm dependencies?

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

How do I mitigate GHSA-fvwr-h9xh-m6wc 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-fvwr-h9xh-m6wc actively exploited in the wild?

No public exploit code has been indexed for GHSA-fvwr-h9xh-m6wc 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-fvwr-h9xh-m6wc published, and has it been updated?

GHSA-fvwr-h9xh-m6wc 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 @commercial/subtextGHSA-fvwr-h9xh-m6wc

GHSA-fvwr-h9xh-m6wc is a security vulnerability in @commercial/subtext. A fix is available for @commercial/subtext — see the affected versions and patch details below.

Published

Sep 3, 2020

Updated

Aug 31, 2020

Affected

1 pkg

Patched

1 / 1

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.

3other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

@commercial/subtextnpm

69downloads / week

Description

Versions of @commercial/subtext prior to 5.1.1 are vulnerable to Denial of Service (DoS). The package fails to enforce the maxBytes configuration for payloads with chunked encoding that are written to the file system. This allows attackers to send requests with arbitrary payload sizes, which may exhaust system resources leading to Denial of Service.

Recommendation

Upgrade to version 5.1.1 or later.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`@commercial/subtext`	all versions	5.1.1`npm install @commercial/subtext@5.1.1`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @commercial/subtext, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update @commercial/subtext to 5.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fvwr-h9xh-m6wc 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 `@commercial/subtext` prior to 5.1.1 are vulnerable to Denial of Service (DoS). The package fails to enforce the `maxBytes` configuration for payloads with chunked encoding that are written to the file system. This allows attackers to send requests with arbitrary payload sizes, which may exhaust system resources leading to Denial of Service. ## Recommendation Upgrade to version 5.1.1 or later.

O3 Security · Impact-Aware SCA

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