Description
When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL.
References (1)
Core 1
Scores
CVSS v3
6.5
EPSS
0.0015
EPSS Percentile
4.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (3)
PowerDNS/DNSdist
1.9.0 - 1.9.12
powerdns/dnsdist
1.9.0 - 1.9.12
PowerDNS/DNSdist
2.0.0 - 2.0.3
Published
Mar 31, 2026
Tracked Since
Mar 31, 2026