PT-2026-35193 · Hickory Dns · Hickory-Recursor

Published 2026-04-26 · Updated 2026-04-28 · CVE-2026-42254

Positive Technologies (AI Summary)

CVSS v3.1

4.0

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Hickory DNS hickory-recursor versions 0.1 through 0.25.2

Description Cross-zone poisoning is possible because cached data is not directly associated with the query that triggered the response.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-706

Related Identifiers

CVE-2026-42254

Affected Products

Hickory-Recursor

References · 11

• https://cve.org/CVERecord?id=CVE-2026-42254 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-42254 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-42254 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42254 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-42254 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-42254 · Vendor Advisory
• https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-83hf-93m4-rgwq · Note
• https://twitter.com/VulmonFeeds/status/2048253758207926433 · Twitter Post
• https://twitter.com/CVEnew/status/2048481062607536335 · Twitter Post
• https://rustsec.org/advisories/RUSTSEC-2026-0106.html · Note
• https://twitter.com/CVEarity/status/2048305930920677396 · Twitter Post