{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77650", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-08-21T00:40:26.113Z", "datePublished": "2026-08-21T00:40:26.467Z", "dateUpdated": "2026-08-21T00:40:26.467Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "append-only-vec", "vendor": "droundy", "versions": [{"status": "affected", "version": "0.1.9", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-506", "description": "CWE-506 Embedded Malicious Code", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-08-21T00:40:26.467Z"}, "references": [{"url": "https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref"}, {"url": "https://github.com/rustsec/advisory-db/issues/3161"}, {"url": "https://www.stepsecurity.io/blog/arrayref-rust-crate-supply-chain-attack"}, {"url": "https://safedep.io/arrayref-proc-macro1-rust-build-time-malware/"}, {"url": "https://rustsec.org/advisories/RUSTSEC-2026-0262.html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "append-only-vec", "vendor": "droundy", "versions": [{"status": "affected", "version": "0.1.9", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-77650", "lastModified": "2026-08-21T01:17:01.993", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-08-21T01:17:01.993", "references": [{"source": "[email protected]", "url": "https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref"}, {"source": "[email protected]", "url": "https://github.com/rustsec/advisory-db/issues/3161"}, {"source": "[email protected]", "url": "https://rustsec.org/advisories/RUSTSEC-2026-0262.html"}, {"source": "[email protected]", "url": "https://safedep.io/arrayref-proc-macro1-rust-build-time-malware/"}, {"source": "[email protected]", "url": "https://www.stepsecurity.io/blog/arrayref-rust-crate-supply-chain-attack"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-506"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"created": "2026-08-21T04:00:13.588830+00:00", "title": "Supply Chain Attack via Rogue Dependency in append\u2011only\u2011vec Crate", "updated": "2026-08-21T04:00:13.588835+00:00", "vendors": []}