CVE-2026-77649

EUVD-2026-63778
The internment crate 0.8.7 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 36.44%
Common Weakness Enumeration
References
https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref
https://github.com/rustsec/advisory-db/issues/3161
https://rustsec.org/advisories/RUSTSEC-2026-0266.html
https://safedep.io/arrayref-proc-macro1-rust-build-time-malware/
https://www.stepsecurity.io/blog/arrayref-rust-crate-supply-chain-attack