CVE-2026-42387

MediumCVSS 5.9/10Last modified Jun 25, 2026

Description

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Jun 25, 2026
Last modified: Jun 25, 2026
NVD status: Deferred

Related CVEs from 2026

CVE-2026-423885.9Incomplete validation of the SOA record present in a catalog zone might lead to a crash.CVE-2026-423895.3This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.CVE-2026-42393.5A vulnerability was found in Lagom WHMCS Template up to 2.3.7. Impacted is an unknown function of the component Datatables. The manipulation CVE-2026-423905.3An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.CVE-2026-423917.5An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CP CVE-2026-423924.3An attacker that has valid credentials can send an invalid IMAP URLFETCH command, which causes uninitialized memory to be included in the er CVE-2026-423933.1The comparison used for the doveadm password and API key is not fully timing safe and can reveal the length of the configured secret. An att CVE-2026-423954.3A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following log CVE-2026-423966.5Insufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to Fail CVE-2026-423976.5Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130 CVE-2026-423987.7Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-confi CVE-2026-423996.5Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated l