Which versions of loading-sessions are malicious?

The following npm versions of loading-sessions are flagged malicious: 6.13.2. Treat any of these as compromised.

How do I remediate loading-sessions if I installed it?

loading-sessions is a typosquat — you almost certainly intended a legitimately-named package. Remove loading-sessions, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed loading-sessions — how do I know if it already compromised me?

If loading-sessions 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 loading-sessions part of a known attack campaign?

Yes — loading-sessions is associated with the IN-MAL-2026-010290, RLMA-2026-05569, RLUA-2026-06309 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 loading-sessions across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for loading-sessions (version 6.13.2).

Malicious package

loading-sessionsnpm

Advisory published Jul 13, 2026Updated Sep 1, 2026

loading-sessions is a confirmed malicious npm package (MAL-2026-10471) that typosquats a legitimate package to trick installs (malicious version 6.13.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in loading-sessions (npm)

MAL-2026-10471

Immediate action

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

npm uninstall loading-sessions

What this malware does

Package name impersonates the pino logger (exports module.exports.pino, ships pino-style files lib/proto.js, lib/levels.js, lib/redaction.js, lib/multistream.js, lib/transport.js, copies pino keywords ['fast','logger','stream','json']). When the exported middleware is invoked, index.js spawns a detached node lib/caller.js child. lib/caller.js base64-decodes a hardcoded URL (https://api.jsonstorage.net/v1/json/2ef8c758-a96f-459e-b036-b3b90379a165/a179ea35-b962-4722-b3f1-e28316d1a44a) disguised as a DEV_API_KEY env-var fake, GETs the JSON document, and passes the response's data.cookie string to new Function.constructor('require', s) and invokes it with require. The fetched content is attacker-controlled and mutable, runs with full Node require access, retries up to 5 times, and is detached so failures are silent. Headers (x-secret-key) are also base64-decoded from masquerading env-var names. This is a classic remote-code dropper hidden behind a typosquat lure.

Malicious versions

1 flagged

6.13.2

Indicators of compromise (SHA-256)

ed919f49d3732fb5d4bd8b177022ed58d9c08b2cded5a6141e2da07c66966a94

2907d99272726cc1d10648311e8b9ae77b53164a89ab868a510dc1d6f1c4c11f

a1d8bcdcd684fcc154d56384b6a7779d786910d7133cf66534d0e270b090bb0d

Detection & response playbook

Typosquat

Find it
Search your lockfiles and build artifacts for loading-sessions (version 6.13.2).
If you installed it — respond
loading-sessions is a typosquat — you almost certainly intended a legitimately-named package. Remove loading-sessions, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If loading-sessions 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. loading-sessions on npm has been identified as a malicious package (version 6.13.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-010290RLMA-2026-05569RLUA-2026-06309

References

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks loading-sessions-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

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