{"id":"CVE-2026-24029","title":"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 configure…","summary":"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 configure…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-863"],"vendor":"powerdns","product":"dnsdist","affected":["dnsdist >= 1.9.0, < 1.9.12","dnsdist >= 2.0.0, < 2.0.3"],"patched":["dnsdist 2.0.3"],"published":"2026-03-31","updated":"2026-07-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-24029","references":[{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html","label":"security@open-xchange.com"}],"tags":["nvd"],"epss":0.00148,"epssPercentile":0.04427,"ingestedAt":"2026-07-25T10:53:53.200Z","slug":"CVE-2026-24029","body":"## Overview\n\nWhen 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.\n\n## Affected\n\n- `dnsdist >= 1.9.0, < 1.9.12`\n- `dnsdist >= 2.0.0, < 2.0.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `dnsdist 2.0.3`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}