PT-2026-139875
CVE-2026-123594
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تاريخ النشر
2026-11-08
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تاريخ التحديث
2026-11-08
الوصف من
CVSS 3.1
4.8
متوسطةالمقاييسAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain an NSEC validation flaw that returns a secure proof for NXDOMAIN responses when the covering NSEC's Next Domain Name is a strict descendant of the query name, which actually proves the name exists as an empty non-terminal. On-path attackers can flip the unsigned rcode of a genuine signed NODATA response from NOERROR to NXDOMAIN, causing validators to accept forged nonexistence of the name.
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