Time-of-check Time-of-use (TOCTOU) The advisory has been revoked - it doesn't affect any version of package openshift4/ose-coredns-rhel9 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-OPENSHIFT4OSECOREDNSRHEL9-15537439
- published14 Mar 2026
- disclosed6 Mar 2026
Introduced: 6 Mar 2026
CVE-2026-26017 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openshift4/ose-coredns-rhel9 package and not the openshift4/ose-coredns-rhel9 package as distributed by RHEL.
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.