ZDF
Sign inSign up

Vulnerabilities

Vulnerability · MAL-2026-15918

Malicious code in @modss/baileys (npm)

Published Sep 3, 2026 · catalog updated Oct 16, 2026 · Malicious code in @modss/baileys

Open the advisory

Exploitation likelihood is not on this record for MAL-2026-15918. A missing EPSS score is not a low risk. Compare Malicious code in @modss/baileys with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Malicious code in @modss/baileys).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
npm @modss/baileys

@modss/baileys is a renamed fork of the Baileys WhatsApp Web library published 2026-09-01 and 2026-09-02 under a scope created the same day. lib/Socket/newsletter.js sets NEWSLETTER_LIST_URL to https://raw.githubusercontent.com/Dayyy-19/Anu/main/Newsletter.json. On every connection.update with connection === 'open', autoFollowConfiguredNewsletters() fetches that list and issues an executeWMexQuery FOLLOW for each id on the user's own authenticated WhatsApp session, caching followed ids in session/followed-newsletters.json. An Indonesian comment in the file explains that the list lives on GitHub so channels can be added or removed without redeploying the code, i.e. the follow targets are publisher-controlled at runtime. All three published versions carry the identical handler. The package also aliases its libsignal dependency to @modss/libsignal, which pkgwarden read as a plain rename with no malicious content. No credential or session-key theft was observed, and the dead-drop URL was not requested by pkgwarden. All versions were fetched from the npm registry and read by hand on 2026-09-03. Same remote-dead-drop shape as MAL-2026-15819 (@mrlegendbot/baileys) and MAL-2026-13932 (my-auto-follow). --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0b6522f1f967259853346030f220d40ef098fc3d54116a23161fb4ccf97f9bd3) package.json declares a runtime dependency whose source is — a GitHub reference with no commit SHA, tag, or version pin. On , npm fetches whatever HEAD of that personal repository currently returns and runs any lifecycle scripts it contains on the installer's machine, with no integrity check. Whoever controls that GitHub account controls code that executes on any machine installing @modss/baileys, and the fetched content can change silently between installs. The named dependency also shadows the legitimate cryptographic library, meaning callers of the package's signal-protocol paths load code from the unpinned third-party fo

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm @modss/baileys1.0.0, 1.0.1, 1.0.2

How to fix MAL-2026-15918

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for MAL-2026-15918. A missing EPSS score is not a low risk. Compare Malicious code in @modss/baileys with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 1.0.0, 1.0.1, 1.0.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 3, 2026 · GitHub Advisory Database

    Detected

    @modss/baileys is a renamed fork of the Baileys WhatsApp Web library published 2026-09-01 and 2026-09-02 under a scope created the same day. lib/Socket/newsletter.js sets NEWSLETTER_LIST_URL to https://raw.githubusercontent.com/Dayyy-19/Anu/main/Newsletter.json. On every connection.update with connection === 'open', autoFollowConfiguredNewsletters() fetches that list and issues an executeWMexQuery

  2. Oct 16, 2026 · GitHub Advisory Database

    Updated

    @modss/baileys is a renamed fork of the Baileys WhatsApp Web library published 2026-09-01 and 2026-09-02 under a scope created the same day. lib/Socket/newsletter.js sets NEWSLETTER_LIST_URL to https://raw.githubusercontent.com/Dayyy-19/Anu/main/Newsletter.json. On every connection.update with connection === 'open', autoFollowConfiguredNewsletters() fetches that list and issues an executeWMexQuery

Sources

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.