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Fencer Intel
critical —

GHSA-99j7-fhr2-xfj4 json

`exploration` was removed from crates.io for malicious code

published 5mo ago modified 4mo ago also RUSTSEC-2026-0155

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

A method within the `exploration` crate attempted to download and execute a payload from a remote site.

The malicious crate had 1 version published on 2026-06-02, approximately 1 hour before removal, and had no evidence of actual usage. This crate had no dependencies on crates.io.

Rustsec to Kirill Boychenko from the [Socket Threat Research Team](https://socket.dev/) for reporting this crate.

Is GHSA-99j7-fhr2-xfj4 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Affected packages

ecosystem package affected fixed in
crates.io exploration
all versions
>=0.0.0-0
 no fix listed

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.