Which versions of simple-date-formatter-util are malicious?

The following npm versions of simple-date-formatter-util are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate simple-date-formatter-util if I installed it?

simple-date-formatter-util is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed simple-date-formatter-util — how do I know if it already compromised me?

If simple-date-formatter-util 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 simple-date-formatter-util part of a known attack campaign?

Yes — simple-date-formatter-util is associated with the GHSA-q32h-xc3m-rc77, IN-MAL-2026-013363 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 simple-date-formatter-util across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for simple-date-formatter-util (version 1.0.0).

Malicious package

simple-date-formatter-utilnpm

Advisory published Aug 2, 2026Updated Aug 5, 2026

simple-date-formatter-util is a confirmed malicious npm package (MAL-2026-11483) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in simple-date-formatter-util (npm)

MAL-2026-11483

Immediate action

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

npm uninstall simple-date-formatter-util

What this malware does

The package appears to be a small date-formatting utility. No credential access, no install-time or import-time network activity, no lifecycle scripts fetching remote content, no obfuscated payloads, and no destinations consistent with exfiltration or command-and-control were observed. Nothing in the shipped contents matches known supply-chain attack fingerprints (installer-secret reads, dropper patterns, silent-relay of caller data, dependency-chain lure).

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

331277f77984c01034871b322154a0430093a1a087c2e3b48d18a4cd1c7254ac

2e828348e997bf53071c8bc1d24adc305be689a64a56f2ababda6ef9370948d3

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for simple-date-formatter-util (version 1.0.0).
If you installed it — respond
simple-date-formatter-util is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If simple-date-formatter-util 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. simple-date-formatter-util on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-q32h-xc3m-rc77IN-MAL-2026-013363

References

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks simple-date-formatter-util-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database