picnic-react-mise-en-placenpm
Advisory published Updated
picnic-react-mise-en-place is a confirmed malicious npm package (MAL-2026-5122) that executes malicious code on install (malicious version 9999.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in picnic-react-mise-en-place (npm)
What this malware does
The OpenSSF Package Analysis project identified 'picnic-react-mise-en-place' @ 9999.0.0 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for picnic-react-mise-en-place (version 9999.0.0).
If you installed it — respond
Remove picnic-react-mise-en-place 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 picnic-react-mise-en-place 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
Credits
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks picnic-react-mise-en-place-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.