Is This vulnerability exploited in the wild?

No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

How severe is This vulnerability?

Informational severity, published 9 November 2026.

Which products and versions are affected?

electrumd (crates.io) SEMVER:introduced=0.0.0-0; Electrumd 0.0.0-0 (all versions, 5 published 2026-01-26).

Is there a fix for This vulnerability?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is This vulnerability attacked?

It is attacked over the network, in a software library.

Check whether you run electrumd (crates.io) or Electrumd at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

electrumd malicious build-time telemetry exfiltration

Severity: info · Published 2026-11-09

The electrumd Rust crate contained malicious code designed to steal telemetry and build environment data during compilation and send it to an attacker-controlled server. The crate was published on crates.io for approximately 10 months before being identified and removed; while no real-world usage was confirmed, any project that added this dependency during that period could have had sensitive build information compromised.

Vendors: crates.io.

Quick answers

Is This vulnerability exploited in the wild?: No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.
How severe is This vulnerability?: Informational severity, published 9 November 2026.
Which products and versions are affected?: electrumd (crates.io) SEMVER:introduced=0.0.0-0; Electrumd 0.0.0-0 (all versions, 5 published 2026-01-26).
Is there a fix for This vulnerability?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is This vulnerability attacked?: It is attacked over the network, in a software library.
Am I affected?: Check whether you run electrumd (crates.io) or Electrumd at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The malicious code executed during the build phase, exfiltrating telemetry from the build environment to an arbitrary attacker-controlled URL. The attack required no user interaction beyond adding the crate as a dependency; all 5 versions published on 2026-01-26 contained this behavior. The crate has been removed from crates.io with no patched versions available.

Affected products

electrumd 0.0.0-0 (all versions, 5 published 2026-01-26)

Timeline

2026-11-09: disclosed: Vulnerability reported and advisory issued
2026-01-26: other: Malicious versions published to crates.io
2026-11: other: Crate removed from crates.io after ~10 months; no evidence of actual usage found

References

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