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Microsoft Security Response CenterCVE-2026-62299

CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT record

MediumVendor CVSS 5.3 / 10 1 CVE Published Jul 18, 2026 at 1:01 AM UTC

Summary

Mariner

Products covered

  • azl3 coredns 1.11.4-20 on Azure Linux 3.0

  • azl3 coredns 1.11.4-17 on Azure Linux 3.0

Remediation

CBL-Mariner Releases

Vendor-listed fixes

  • 1.11.4-20

  • 1.11.4-18

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.