Operation on a Resource after Expiration or Release Affecting rust-hickory-recursor package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.27% (20th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUSTHICKORYRECURSOR-22382558
  • published9 Nov 2026
  • disclosed8 Nov 2026

Introduced: 8 Nov 2026

NewCVE-2026-123602  (opens in a new tab)
CWE-672  (opens in a new tab)

How to fix?

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

NVD Description

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

The Hickory DNS recursor in all versions of hickory-recursor and in hickory-resolver 0.26.0-beta.1 before 0.26.2 (recursor feature) is vulnerable to ghost domain names attacks because it reuses child-side apex NS RRsets cached from zone NS queries for iterative resolution. By repeatedly querying a zone's NS records, an attacker keeps the stale RRset cached indefinitely, letting name servers whose delegation the parent revoked keep answering for the zone.

CVSS Base Scores

version 3.1