{"id":"CVE-2026-24030","title":"An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service","summary":"An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually res…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-789"],"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-2026-24030","references":[{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html","label":"security@open-xchange.com"}],"tags":["nvd"],"epss":0.00537,"epssPercentile":0.4416,"ingestedAt":"2026-07-25T10:53:53.226Z","slug":"CVE-2026-24030","body":"## Overview\n\nAn attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.\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":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}