Which versions of jsonupon are malicious?

The following npm versions of jsonupon are flagged malicious: 7.2.7. Treat any of these as compromised.

How do I remediate jsonupon if I installed it?

Remove jsonupon 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 jsonupon — how do I know if it already compromised me?

If jsonupon 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 jsonupon part of a known attack campaign?

Yes — jsonupon is associated with the RLMA-2025-06379 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 jsonupon across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for jsonupon (version 7.2.7).

Malicious package

jsonuponnpm

Advisory published Dec 23, 2025Updated Jan 2, 2026

jsonupon is a confirmed malicious npm package (MAL-2025-192813) that executes malicious code on install (malicious version 7.2.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in jsonupon (npm)

MAL-2025-192813

Immediate action

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

npm uninstall jsonupon

What this malware does

The package jsonupon was found to contain malicious code.

Malicious versions

1 flagged

7.2.7

Indicators of compromise (SHA-256)

6d61bee5506a16f372aa4b8585123308adf71916762e707b3be41969b817f779

e934753e8b8ee104342730e5c20c02ad4724c9fdfdf889ffa8e026d141133cdc

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for jsonupon (version 7.2.7).
If you installed it — respond
Remove jsonupon 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 jsonupon 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. jsonupon on npm has been identified as a malicious package (version 7.2.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06379

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks jsonupon-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