CVE-2026-77651
Received Received - Intake

Malicious Code Execution in arrayref Rust Crate

Publication date: 2026-08-21

Last updated on: 2026-08-21

Assigner: MITRE

Description
The arrayref crate 0.3.10 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.

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Meta Information

Published
2026-08-21
Last Modified
2026-08-21
Generated
2026-08-21
AI Q&A
2026-08-21
EPSS Evaluated
N/A
NVD
CVE-2026-77651
EUVD
EUVD-2026-63780

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
rust arrayref 0.3.10
rust proc-macro1 *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-506 The product contains code that appears to be malicious in nature.

Attack-Flow Graph

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Executive Summary

The arrayref crate 0.3.10 for Rust contains a malicious dependency that can execute arbitrary code during project compilation. The crate was removed from crates.io after being published for about 86 minutes due to this issue.

Detection Guidance

Check if your project uses arrayref version 0.3.10 by running cargo tree or inspecting Cargo.lock. Look for the malicious dependency proc-macro1 in build scripts.

Impact Analysis

If you compiled a project using arrayref 0.3.10, the malicious dependency could execute arbitrary code on your system during the build process. However, no evidence of actual usage was found.

Mitigation Strategies

Downgrade to arrayref version 0.3.9 or lower. Remove any references to proc-macro1 in build scripts. Avoid using version 0.3.10 entirely.

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