mysten-metricscrates.io
Advisory published Updated
mysten-metrics is a confirmed malicious crates.io package (MAL-2026-2958) that executes malicious code on install (malicious versions 9.0.0, 9.0.3). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in mysten_metrics (crates.io)
What this malware does
The OpenSSF Package Analysis project identified 'mysten-metrics' @ 9.0.3 (crates.io) as malicious.
It is considered malicious because:
- The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for mysten-metrics (2 malicious versions).
If you installed it — respond
Remove mysten-metrics 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 mysten-metrics 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 mysten-metrics-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.