CVE-2026-39155
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Jul 23, 2026
Vendor
unknown
Description
Knot DNS before 3.4.10 and 3.5.x before 3.5.4 contains a vulnerability in mod-onlinesign where the next NSEC owner name can be computed incorrectly. This can create an overly broad authenticated denial interval, allowing downstream validating resolvers using aggressive negative caching to synthesize negative answers for legitimate names and causing resolver-side denial of service.