{"id":"RUSTSEC-2026-0262","aliases":[],"status":"published","title":"`append-only-vec` 0.1.9 was removed from crates.io due to a malicious dependency","description":"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","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-08-20T12:00:00Z","modified":"2026-10-20T11:00:02Z","fixes":[{"ecosystem":"crates.io","package":"append-only-vec","fixed_in":["0.1.10-0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"crates.io","package":"append-only-vec","ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.9"},{"fixed":"0.1.10-0"}]}]}],"references":[{"url":"https://crates.io/crates/append-only-vec","tags":["package"]},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0262.html","tags":["advisory"]},{"url":"https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref","tags":["web"]}],"sources":{"osv":[{"id":"RUSTSEC-2026-0262","title":"`append-only-vec` 0.1.9 was removed from crates.io due to a malicious dependency","description":"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","status":"published","published":"2026-08-20T12:00:00Z","modified":"2026-10-20T11:00:02.677736709Z","updated_at":"2026-11-02T15:53:40.430679Z"}]}}