RUSTSEC-2026-0264

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0264

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0264.json

JSON Data

https://api.test.osv.dev/v1/vulns/RUSTSEC-2026-0264

Published

2026-08-20T12:00:00Z

Modified

2026-08-21T06:30:39.173803720Z

Summary

`proc-macro-en` was removed from crates.io due to malicious code

Details

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.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / proc-macro-en

Package

Name: proc-macro-en; View open source insights on deps.dev
Purl: pkg:cargo/proc-macro-en

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Ecosystem specific

{
    "affects": {
        "functions": [],
        "arch": [],
        "os": []
    },
    "affected_functions": null
}

Database specific

informational

null

cvss

null

source

"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0264.json"