{"id":"CVE-2026-77650","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-77650","generatedAt":"2026-10-28T07:04:06.477Z","title":"The append-only-vec crate 0.1.9 for Rust can trigger execution of malicious code when compiling a project that uses the crate, because it has a rogue dependency that registers with a command-and-control server to offer arbitrary code execution.","description":"The append-only-vec crate 0.1.9 for Rust can trigger execution of malicious code when compiling a project that uses the crate, because it has a rogue dependency that registers with a command-and-control server to offer arbitrary code execution.","published":"2026-08-21T01:17:02.000Z","lastModified":"2026-10-18T20:10:00.000Z","status":"Deferred","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-506"],"affected":[],"epss":{"score":0.00801,"percentile":0.56432,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref","source":"cve@mitre.org"},{"url":"https://github.com/rustsec/advisory-db/issues/3161","source":"cve@mitre.org"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0262.html","source":"cve@mitre.org"},{"url":"https://safedep.io/arrayref-proc-macro1-rust-build-time-malware/","source":"cve@mitre.org"},{"url":"https://www.stepsecurity.io/blog/arrayref-rust-crate-supply-chain-attack","source":"cve@mitre.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-77650","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}