Which versions of mx-www-locales-common are malicious?

The following npm versions of mx-www-locales-common are flagged malicious: 99.0.0. Treat any of these as compromised.

How do I remediate mx-www-locales-common if I installed it?

Remove mx-www-locales-common from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed mx-www-locales-common — how do I know if it already compromised me?

If mx-www-locales-common was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is mx-www-locales-common part of a known attack campaign?

Yes — mx-www-locales-common is associated with the RLMA-2026-10764 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find mx-www-locales-common across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for mx-www-locales-common (version 99.0.0).

Malicious package

mx-www-locales-commonnpm

Advisory published Sep 22, 2026Updated Sep 24, 2026

mx-www-locales-common is a confirmed malicious npm package (MAL-2026-16536) that executes malicious code on install (malicious version 99.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in mx-www-locales-common (npm)

MAL-2026-16536

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall mx-www-locales-common

Malicious versions

1 flagged

99.0.0

Indicators of compromise (SHA-256)

8d02054f66e0abc3417487cb57e51b9c2db2f63bccc32f2c6c6715c5209f6df2

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for mx-www-locales-common (version 99.0.0).
If you installed it — respond
Remove mx-www-locales-common from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If mx-www-locales-common was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. mx-www-locales-common on npm has been identified as a malicious package (version 99.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-10764

Credits

ReversingLabs · finder

Detect & block this

O3 blocks mx-www-locales-common-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database