Authentication Bypass Affecting rust-hickory-proto package, versions *


Severity

Recommended
0.0
low
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.28% (22nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUSTHICKORYPROTO-22382562
  • published9 Nov 2026
  • disclosed8 Nov 2026

Introduced: 8 Nov 2026

NewCVE-2026-123578  (opens in a new tab)
CWE-290  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest rust-hickory-proto.

NVD Description

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

Hickory DNS hickory-net 0.26.0 before 0.26.2 and hickory-proto 0.25.0 through 0.25.2 skip the check that a UDP response's question section matches the query when the response has an empty question section (QDCOUNT=0), and also skip the case-randomization check. Remote attackers able to inject spoofed UDP responses can send QDCOUNT=0 responses to bypass these checks, weakening defenses against DNS spoofing.

CVSS Base Scores

version 3.1