CVE-2026-77650
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.4%
exploitation probability
0.4%top 63% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
droundy · append-only-vecReferences
https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayrefhttps://github.com/rustsec/advisory-db/issues/3161https://rustsec.org/advisories/RUSTSEC-2026-0262.htmlhttps://safedep.io/arrayref-proc-macro1-rust-build-time-malware/https://www.stepsecurity.io/blog/arrayref-rust-crate-supply-chain-attack