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CVE-2026-10846 (GCVE-0-2026-10846)

Vulnerability from cvelistv5 – Published: 2026-06-10 06:37 – Updated: 2026-06-10 14:45
VLAI
Title
Insufficient verification that responses belong to a query
Summary
NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of the response. This makes applications, that use ldns for (stub) resolver functionality over UDP, vulnerable for off-path poisoning attacks. The drill tool, which is shipped with ldns, suffers from this vulnerability.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 14:43 UTC
CWE
  • CWE-346 - Origin Validation Error
Assigner
References
Impacted products
Vendor Product Version CPE status
NLnet Labs ldns Affected: 1.2.0 , < 1.9.1 (semver)
guessed Create a notification for this product.
Date Public
2026-06-10 00:00
Credits
Pablo Ruiz from 'codecome.ai'
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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