CVE-2026-62299: CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT record

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-07-18

Last Updated

2026-08-13

EPSS Score

0.54% (percentile: 43.2%)

Affected Products (2)

Other

• 21687-17084
• 21585-17084

Revision History

• 2026-07-18: Information published.
• 2026-07-21: Information published.
• 2026-08-13: Information published.