RUSTSEC-2026-0018

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0018

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0018.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2026-0018

Published

2026-02-24T12:00:00Z

Modified

2026-02-24T16:58:18.268633Z

Summary

`rpc-check` was removed from crates.io for malicious code

Details

This is part of an ongoing campaign to attempt to typosquat crates in the <code>polymarket-client-sdk</code> ecosystem to exfiltrate user credentials.

The malicious crate had 6 versions published from 2026-02-20 onwards and had no evidence of actual usage. There were no crates depending on this crate on crates.io.

Thanks to Eren for finding and reporting this to the Rust security response working group, and to Emily Albini for co-ordinating with the crates.io team.

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.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / rpc-check

Package

Name: rpc-check; View open source insights on deps.dev
Purl: pkg:cargo/rpc-check

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "functions": [],
        "os": [],
        "arch": []
    }
}