{"id":"RUSTSEC-2026-0264","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\n`proc-macro1` and it was part of the same supply chain attack.\n\nThis crate had one single version published at 2026-08-20. The crate was\nremoved from crates.io and related user account was locked.\n\nThis crate was used as part of a malware campaign targeted at users of\n`arrayref`, which was downloaded 2,285 times before being removed; see\n[the `arrayref` advisory][arrayref-advisory] for more detail.\n\n[arrayref-advisory]: https://rustsec.org/advisories/RUSTSEC-2026-0260.html","modified":"2026-08-21T06:30:39.173803720Z","published":"2026-08-20T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/proc-macro-en"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0264.html"},{"type":"WEB","url":"https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref"}],"affected":[{"package":{"name":"proc-macro-en","ecosystem":"crates.io","purl":"pkg:cargo/proc-macro-en"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}],"ecosystem_specific":{"affected_functions":null,"affects":{"arch":[],"os":[],"functions":[]}},"database_specific":{"categories":["malicious"],"cvss":null,"informational":null,"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0264.json"}}],"schema_version":"1.9.0"}