CVE-2026-24029 — Incorrect Authorization in Dnsdist

CWE-863 — Incorrect Authorization8 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
0.0%
top 99.90%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Powerdns Dnsdist
Timeline
PublishedMar 31

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 3.9 | Impact: 2.5

Affected Packages2 packages

▶CVEListV5powerdns/dnsdist1.9.0 — 1.9.12+1
▶Debianpowerdns/dnsdist< 2.0.3-1

🔴Vulnerability Details

3
GHSA
GHSA-hh36-f69g-hq4h: 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↗2026-03-31
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CVEList
DNS over HTTPS ACL bypass↗2026-03-31
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OSV
CVE-2026-24029: 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↗2026-03-31
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📋Vendor Advisories

1
Debian
CVE-2026-24029: dnsdist - When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is ena...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-24029 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

2
Bugzilla
CVE-2026-24029 dnsdist: dnsdist: Access Control List bypass allows unauthorized DNS over HTTPS queries [fedora-all]↗2026-03-31
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Bugzilla
CVE-2026-24029 dnsdist: dnsdist: Access Control List bypass allows unauthorized DNS over HTTPS queries [epel-all]↗2026-03-31
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CVE-2026-24029 — Incorrect Authorization in Dnsdist | cvebase