{"id":"RUSTSEC-2026-0262","summary":"`append-only-vec` 0.1.9 was removed from crates.io due to a malicious dependency","details":"A new version of the `append-only-vec` crate was published with a direct dependency\non `proc-macro1`, which would execute a malicious build script.\n\nThe compromised version of this crate was published on 2026-08-20, and was\nremoved approximately 107 minutes later.\n\nThe compromised crate version was used as part of a malware campaign targeted\nat users of `arrayref`, which was downloaded 2,285 times before being removed;\nsee [the `arrayref` advisory][arrayref-advisory] for more detail.\n\n[arrayref-advisory]: https://rustsec.org/advisories/RUSTSEC-2026-0260.html","modified":"2026-08-21T06:30:03.211678444Z","published":"2026-08-20T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/append-only-vec"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0262.html"},{"type":"WEB","url":"https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref"}],"affected":[{"package":{"name":"append-only-vec","ecosystem":"crates.io","purl":"pkg:cargo/append-only-vec"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.9-0"}]}],"ecosystem_specific":{"affects":{"os":[],"functions":[],"arch":[]},"affected_functions":null},"database_specific":{"cvss":null,"informational":null,"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0262.json","categories":["malicious"]}}],"schema_version":"1.9.0"}