{"affected":[{"defaultStatus":"unaffected","ecosystem":"cargo","packageName":"hickory-dns","product":"hickory-dns","source":"CNA: VulnCheck","vendor":"hickory-dns","versions":[{"lessThan":"0.26.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"0.26.2","versionType":"semver"}]}],"cveId":"CVE-2026-123575","cwes":["CWE-770"],"description":"Hickory DNS before 0.26.2 contains a resource exhaustion vulnerability in its DNS-over-HTTPS HTTP/2 server that lacks sufficient timeouts or limits for incomplete request bodies. Remote attackers can open DoH connections, send incomplete request bodies, and hold connections open to exhaust server memory.","epss":{"date":"2026-11-12","percentile":0.35715,"score":0.00409},"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":7.5,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794539128038,"publishedAt":1794101891288,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-g5xf-qv55-wv37"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/hickory-dns-before-0.26.2-doh-memory-exhaustion-via-incomplete-request-bodies"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-g5xf-qv55-wv37"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/hickory-dns-before-0.26.2-doh-memory-exhaustion-via-incomplete-request-bodies"}],"remediation":[],"revision":"12c8187d7cb3cf75c186596ba8b33b4e59f83e48cdb4a58e7821a430cf6385a7","sources":[{"modifiedAt":1794539128038,"name":"CNA: VulnCheck","retrievedAt":1794542912225,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123575"},{"modifiedAt":1794348959797,"name":"NVD","retrievedAt":1794356342616,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123575"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794542929004,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123575"}],"ssvc":{"assessedAt":1794539118454,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Hickory DNS before 0.26.2 DoH Memory Exhaustion via Incomplete Request Bodies","updatedAt":1794542929004}