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Malicious code in @mrlegendbot/baileys (npm)

GHSA-g94h-cm42-jgx8

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm @mrlegendbot/baileys

    Affected
    every version
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
not scored
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

@mrlegendbot/baileys is a fork of the WhatsApp Web library @whiskeysockets/baileys that silently makes the victim account follow attacker-chosen WhatsApp newsletter channels. lib/Socket/newsletter.js adds a startAutoFeatures() function (line 230) that is scheduled with setTimeout(() => startAutoFeatures(fullSock), 0) at socket construction (line 255), unconditionally and with no API surface exposing it. It fetches https://raw.githubusercontent.com/travatiger/MrLegend/refs/heads/main/Chids.json (line 236), parses the response as a list of channel ids, and calls sockInstance.newsletterFollow(id) for each one (line 246) on the caller's authenticated session, stepping through the list every 10 seconds (FOLLOW_INTERVAL = 10000, line 232). Because the list is fetched from a GitHub repository at run time, targeting can be changed without a new package release. Diffing lib/Socket against upstream @whiskeysockets/baileys 7.0.0-rc14 confirms this block has no upstream equivalent; the…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from osv record MAL-2026-15819

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-g94h-cm42-jgx8

Advisory: Malicious code in @mrlegendbot/baileys (npm)
IDs: GHSA-g94h-cm42-jgx8
Record: https://patchnext.com/advisories/mal-2026-15819 (revision 1, source checked 3 Nov 2026, 06:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @mrlegendbot/baileys: affected every version

## Suggested inspection (read-only)
- `npm ls @mrlegendbot/baileys --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @mrlegendbot/baileys.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/MAL-2026-15819 (OSV record MAL-2026-15819 lists affected ranges: npm @mrlegendbot/baileys >=0)

Commands are suggestions: review each one before running it.

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