GCVE-110-OSM-2026-8452

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published July 18, 2026

`custom-req-on-workers` was removed from crates.io for malicious code Details: `custom-req-on-workers` was part of a campaign that attempted to exfiltrate environmental data from the host. The malicious crate had 1 version published in January 2025, and had no evidence of actual usage. This crate had no dependencies on crates.io.

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

8.8/10

High · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown	custom-req-on-workers	all (affected)	—

References

Malicious crates package: custom-req-on-workers

advisory

vendor

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