Critical (AgentArmorHQ estimate)Supply chain

Malware in formatting-subtitles-for-claude

Product
formatting-subtitles-for-claude (npm package)
Affected
npm/formatting-subtitles-for-claude >= 0
Fixed in
No fix yet

Last verified against sources: October 26, 2026

Am I affected?

formatting-subtitles-for-claude (npm package): affected npm/formatting-subtitles-for-claude >= 0. No fix has been reported yet.

  • Check your version: run npm ls formatting-subtitles-for-claude. Versions >= 0 of formatting-subtitles-for-claude are affected. [1]

What to do now

  1. Remove the package if it is installed: run npm uninstall formatting-subtitles-for-claude. [1]
  2. Remove the package from the computer. [1]
  3. Rotate all secrets and keys stored on that computer immediately from a different computer. [1]

General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.

Discuss this incident

What happened

  • The npm package formatting-subtitles-for-claude contains malware. [1]
  • Any computer that has this package installed or running should be considered fully compromised. [1]
  • No patched version of the package exists. [1]

Impact

  • An outside entity may have been given full control of the computer. [1]
  • Removing the package may not remove all malicious software that came from installing it. [1]

What was done

  • The advisory lists no patched version for this package. [1]

Sources

  1. GHSA-xxr7-33gg-pcg6 — GitHub Advisory Database

Every statement above was checked against these sources before publishing. Spotted an error? Tell us and we will correct it with a dated note.

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Brief
Malware in formatting-subtitles-for-claude
Product: formatting-subtitles-for-claude (npm package) | Affected: npm/formatting-subtitles-for-claude >= 0 | Fixed in: No fix yet
Summary: The npm package formatting-subtitles-for-claude contains malware.
Source & remediation on AgentArmorHQ: https://agentarmorhq.com/incidents/2026/10/ghsa-xxr7-33gg-pcg6-formatting-subtitles-for-claude-npm-package
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