Authentication Bypass Affecting rust-hickory-net package, versions <0.26.3-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RUSTHICKORYNET-22382158
  • published9 Nov 2026
  • disclosed8 Nov 2026

Introduced: 8 Nov 2026

NewCVE-2026-123580  (opens in a new tab)
CWE-290  (opens in a new tab)

How to fix?

Upgrade Debian:unstable rust-hickory-net to version 0.26.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-hickory-net package and not the rust-hickory-net package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 perform insufficient checks on NSEC3 record names during DNSSEC verification, comparing only the hashed label without confirming the record belongs to the correct zone. Attackers can supply NSEC3 records from another zone with a matching hash label to forge DNSSEC nonexistence proofs.

CVSS Base Scores

version 3.1