Upstream information

CVE-2026-26017 at MITRE

Description

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) National Vulnerability Database
Base Score 7.7 6.3
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack Vector Network Network
Attack Complexity Low High
Privileges Required Low Low
User Interaction None None
Scope Changed Changed
Confidentiality Impact High High
Integrity Impact None None
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1259320 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15 SP6
  • coredns >= 1.14.2-bp156.4.16.1
  • coredns-extras >= 1.14.2-bp156.4.16.1
 Patchnames:
openSUSE-2026-79
openSUSE Leap 15.6
  • coredns >= 1.14.2-bp156.4.16.1
  • coredns-extras >= 1.14.2-bp156.4.16.1
 Patchnames:
openSUSE-2026-79
openSUSE-SLE-15.6-2026-1042
openSUSE Tumbleweed
  • coredns >= 1.14.2-1.1
  • coredns-extras >= 1.14.2-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10297

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
openSUSE Leap 15.6 govulncheck-vulndb Released
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise Module for Package Hub 15 SP5 govulncheck-vulndb Affected
SUSE Linux Enterprise Module for Package Hub 15 SP6 govulncheck-vulndb Affected
SUSE Package Hub 15 SP6 coredns Released
openSUSE Leap 15.5 govulncheck-vulndb Affected

SUSE Timeline for this CVE

CVE page created: Fri Mar 6 18:02:39 2026
CVE page last modified: Fri Mar 27 17:01:56 2026