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Malicious package

katal-loggernpm

Advisory published Updated

katal-logger is a confirmed malicious npm package (MAL-2026-15513) that executes malicious code on install (malicious version 45.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in katal-logger (npm)

MAL-2026-15513
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall katal-logger

What this malware does

package.json declares a dependency whose value is a bare HTTPS URL (https://repo.securityctrl.com/katal-logger) instead of a registry version range. On npm install, npm fetches whatever bytes that URL currently returns and installs them as the package, executing any lifecycle scripts contained inside. There is no version pin, no integrity/hash check, and the host is unrelated to the npm registry, so control over repo.securityctrl.com equates to code execution on the installing machine. The dependency key equals the package's own name (dependency-confusion shape) and the shipped index.js is an inert stub, so the manifest line is the entire delivery mechanism — the absence of scripts in this tarball does not mitigate the fetch.

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
45.0.0

Indicators of compromise (SHA-256)

8ff7c110d8766d130db16799f1875e420bdaba20866624b593a209ace7a49d6a
93168a739fee242d09374c68954a4efd5aa8633c2e61772d1289078fb555bef1

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for katal-logger (version 45.0.0).

  2. If you installed it — respond

    Remove katal-logger 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.

  3. Did it already run?

    If katal-logger 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. katal-logger on npm has been identified as a malicious package (version 45.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019084GHSA-f2rf-58x5-5f6w

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks katal-logger-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.

Explore

katal-logger (npm) malicious package — MAL-2026-15513 | O3 Security