VulnerabilityDeferred
CVE-2026-77649
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.
CRITICAL 9.8EPSS 0.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.43% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-506
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.