- Reported
-
- Issued
-
- Package
-
proc-macro1
- Type
-
Vulnerability
- Categories
-
- References
-
- Patched
-
no patched versions
Description
It was reported proc-macro1 contained a build script that would download a
malicious payload.
This crate had two versions, both published at 2026-08-20 and it was used
in a supply chain attack targeting popular crates. The crate was removed from
crates.io and related user accounts were locked.
Thanks to the Research Team at Nextron Systems GmbH for reporting this to the
Rust security response working group, and thanks to Emily Albini for coordinating
with the crates.io and infra-admin teams.
Advisory available under CC0-1.0
license.