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Part of a larger attack: @asyncapi published 36 malicious packages. See the full campaign →
Malicious package

@asyncapi/openapi-schema-parsernpm

Advisory published Updated

@asyncapi/openapi-schema-parser is a confirmed malicious npm package (MAL-2025-190639) that steals credentials and exfiltrates sensitive data (malicious versions 3.0.25, 3.0.26). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @asyncapi/openapi-schema-parser (npm)

MAL-2025-190639
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @asyncapi/openapi-schema-parser

What this malware does

The package @asyncapi/openapi-schema-parser was found to contain malicious code.

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.

This package was compromised by the Sha1-Hulud: The Second Coming NPM worm. The malicious payload steals tokens and credentials and publishes them to GitHub. The worm will propogate itself to NPM packages the user owns and establish persistence is a GitHub action. The package may also destroy the user's home directory.

Malicious versions

2 flagged
3.0.253.0.26

Indicators of compromise (SHA-256)

c3d72dbb5bb7b112bdfb105ae4bf4c7c8467e2e75ac982d2f2f3248e632fdc89
7b4e9b39029c1f0084db9cd77fb419e5b003036f5b3db50d6b52097114f0c729
bb888ef44582767a0ad1851829964605d3ae3b24e44db6467d7275ea899560d5
fca390ee12c7224aa787a65592e9a040b43abf58c2e518a292262947c0e997f1

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for @asyncapi/openapi-schema-parser (2 malicious versions).

  2. If you installed it — respond

    @asyncapi/openapi-schema-parser 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.

  3. Did it already run?

    If @asyncapi/openapi-schema-parser 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. @asyncapi/openapi-schema-parser on npm has been identified as a malicious package (versions 3.0.25, 3.0.26 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-hf2q-r24h-7qvm

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @asyncapi/openapi-schema-parser-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
@asyncapi/openapi-schema-parser (npm) malicious package — MAL-2025-190639 | O3 Security