online-header

GHSA-hg4r-6gv8-6hmj

Malicious code in online-header (npm)

Details

**Severity:** Critical

**Affected versions:** `= 99.0.0`

## Source: ossf-package-analysis (161e267d603ad6aae77c0c365e895c8e40538da2c09f746c2183124434509fdc)
The OpenSSF Package Analysis project identified 'online-header' @ 99.0.0 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/0fe2a4d4834bbee323e6887c94ad6a40ff62f056/osv/malicious/npm/online-header/MAL-2026-17420.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/0fe2a4d4834bbee323e6887c94ad6a40ff62f056/osv/malicious/npm/online-header/MAL-2026-17420.json
- https://github.com/ossf/malicious-packages/blob/ae1ef40954ea15dd560720d58f647c9880afc699/osv/malicious/npm/online-header/MAL-2026-17420.json
- https://www.npmjs.com/package/online-header/v/99.0.0
- https://github.com/advisories/GHSA-hg4r-6gv8-6hmj

Compromised versions (1)

= 99.0.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.