GCVE-110-OSM-2026-8447

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published July 18, 2026

`polymarkets-rs-clob-client` was removed from crates.io for malicious code Details: This is part of an ongoing campaign to attempt to typosquat crates in the [`polymarket-client-sdk`](https://crates.io/crates/polymarket-client-sdk) ecosystem to exfiltrate user credentials. The malicious crate had 1 version published on 2026-02-19 approximately 20 hours before removal and had no evidence of actual downloads. There were no crates depending on this crate on crates.io. Thanks to Adam Harvey at the Rust Foundation, who is awkwardly thanking himself in this instance. The crates.io team advises anyone developing with Polymarket to review dependencies carefully. We are investigating ways to mitigate this attacker who appears to be very motivated to steal Polymarket credentials.

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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	polymarkets-rs-clob-client	all (affected)	—

References

Malicious crates package: polymarkets-rs-clob-client

advisory

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