# RUSTSEC-2026-0120 - NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses

Source: https://junglewise.ai/threats/rustsec-2026-0120-nsec3-closest-encloser-proof-validation-enters-d060cac8  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-01  
License: CC BY 4.0 with a link back

Severity: info · Published 2026-05-01

NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses

Vendors: [crates.io](https://junglewise.ai/threats/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 1 May 2026.

**Which products and versions are affected?** hickory-net (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.26.1.

**Is there a fix for This vulnerability?** Yes. hickory-net (crates.io): upgrade to 0.26.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run hickory-net (crates.io) 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.

## How to fix

- hickory-net (crates.io): upgrade to 0.26.1 or later

  ```sh
  cargo update -p hickory-net
  ```


## Affected products

- hickory-net (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.26.1

## Related threats

- [hickory-proto: NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses](https://junglewise.ai/threats/hickory-proto-nsec3-closest-encloser-proof-validation-enters-unbounded-e7dc6c28)