RUSTSEC-2026-0264
`proc-macro-en` was removed from crates.io due to malicious code
We identified that proc-macro-en contained the same build script as
proc-macro1 and it was part of the same supply chain attack.
This crate had one single version published at 2026-08-20. The crate was removed from crates.io and related user account was locked.
This crate was used as part of a malware campaign targeted at users of
arrayref, which was downloaded 2,285 times before being removed; see
the arrayref advisory for more detail.
What each source reports
OSV No score
`proc-macro-en` was removed from crates.io due to malicious code
We identified that proc-macro-en contained the same build script as
proc-macro1 and it was part of the same supply chain attack.
This crate had one single version published at 2026-08-20. The crate was removed from crates.io and related user account was locked.
This crate was used as part of a malware campaign targeted at users of
arrayref, which was downloaded 2,285 times before being removed; see
the arrayref advisory for more detail.
- Record
RUSTSEC-2026-0264- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
proc-macro-encrates.io |
0.0.0-0 and later | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
RUSTSEC-2026-0264 is a vulnerability with no CVSS score yet in proc-macro-en, published August 20, 2026. No source lists public exploit code. No source names a fixed version.