CVE-2026-26018
7.5 · HIGHOverview
CVE-2026-26018 is a high-severity vulnerability affecting coredns.io coredns. It was published on March 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.
Remediation
Check the references section for vendor advisories and patches from coredns.io. Update coredns to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| coredns.io | coredns | >= 0, < 1.14.2 | Affected |
References
Frequently Asked Questions
What is CVE-2026-26018?
CVE-2026-26018 is a high-severity vulnerability affecting coredns.io coredns. It was published on March 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-26018?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-26018?
Check the references section for vendor advisories and patches from coredns.io. Update coredns to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-26018?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-26018 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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