How severe is GHSA-28xx-8j99-m32j?

GHSA-28xx-8j99-m32j has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-28xx-8j99-m32j?

GHSA-28xx-8j99-m32j affects the following packages: nginxbeautifier (npm). Ecosystems affected: npm.

How do I fix GHSA-28xx-8j99-m32j?

Update nginxbeautifier to 1.0.15 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-28xx-8j99-m32j is resolved across your whole dependency graph.

How do I detect GHSA-28xx-8j99-m32j in my npm dependencies?

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

How do I mitigate GHSA-28xx-8j99-m32j if there is no patch (or I can't update yet)?

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.

Is GHSA-28xx-8j99-m32j actively exploited in the wild?

No public exploit code has been indexed for GHSA-28xx-8j99-m32j 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-28xx-8j99-m32j published, and has it been updated?

GHSA-28xx-8j99-m32j was published on September 1, 2020 and was last updated on October 1, 2021. 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

CRITICAL severity

Malicious Package in nginxbeautifierGHSA-28xx-8j99-m32j

CRITICAL

GHSA-28xx-8j99-m32j is a critical-severity (CVSS 9.8) vulnerability in nginxbeautifier. A fix is available for nginxbeautifier — see the affected versions and patch details below.

Published

Sep 1, 2020

Updated

Oct 1, 2021

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 1, 2021 · 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

nginxbeautifiernpm

293downloads / week

Description

Version 1.0.14 of nginxbeautifier contained malicious code. The code when executed in the browser would enumerate password, cvc, cardnumber fields from forms and send the extracted values to https://js-metrics.com/minjs.php?pl=

Recommendation

If version 1.0.14 of this module is found installed you will want to replace it with a version before or after 1.0.14. In addition to replacing the installed module, you will also want to evaluate your application to determine whether or not user data was compromised.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`nginxbeautifier`	≥ 1.0.14&&< 1.0.15	1.0.15`npm install nginxbeautifier@1.0.15`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nginxbeautifier, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update nginxbeautifier to 1.0.15 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-28xx-8j99-m32j is resolved across your whole dependency graph.
Workarounds
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.

Frequently Asked Questions

Version 1.0.14 of `nginxbeautifier` contained malicious code. The code when executed in the browser would enumerate password, cvc, cardnumber fields from forms and send the extracted values to `https://js-metrics.com/minjs.php?pl=` ## Recommendation If version 1.0.14 of this module is found installed you will want to replace it with a version before or after 1.0.14. In addition to replacing the installed module, you will also want to evaluate your application to determine whether or not user data was compromised.

O3 Security · Impact-Aware SCA

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