{"id":"CVE-2026-116013","aliases":[],"cve":{"records":[{"id":"CVE-2026-116013","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-24T11:23:54.934Z","published":"2026-10-24T11:40:31.527Z","modified":"2026-10-29T18:23:41.998Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-24T11:40:31.527Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T18:23:41.998Z"}],"references":[{"url":"https://github.com/openresty/lua-resty-dns/pull/83","tags":["patch","issue-tracking"],"source":"VulnCheck"},{"url":"https://github.com/openresty/lua-resty-dns/commit/b68eaecbf7997ac71c08ba56032b1f45438bd758","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/openresty/lua-resty-dns/blob/v0.23/lib/resty/dns/resolver.lua#L396-L442","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/openresty/lua-resty-dns/tree/v0.24","tags":["release-notes"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/openresty-lua-resty-dns-before-0.24-denial-of-service-via-dns-response-parsing","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-130","description":"Improper Handling of Length Parameter Inconsistency","source":"VulnCheck"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T18:23:30.818454Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"OpenResty lua-resty-dns before 0.24 Denial of Service via DNS Response Parsing","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"OpenResty lua-resty-dns before 0.24 contains an improper input validation vulnerability in parse_section() and _decode_name() that fails to check resource record lengths against the received message. Attackers controlling or spoofing a queried nameserver can send truncated record headers or RDATA, raising uncaught Lua exceptions in resolver:query() that abort requests and break name resolution.","score":6.3,"severity":"medium","published":"2026-10-24T11:40:31.527Z","modified":"2026-10-29T18:23:41.998Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"openresty","name":"lua-resty-dns","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"0.24","versionType":"custom"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116013"}],"remediation":[],"references":["https://github.com/openresty/lua-resty-dns/pull/83","https://github.com/openresty/lua-resty-dns/commit/b68eaecbf7997ac71c08ba56032b1f45438bd758","https://github.com/openresty/lua-resty-dns/blob/v0.23/lib/resty/dns/resolver.lua#L396-L442","https://github.com/openresty/lua-resty-dns/tree/v0.24","https://www.vulncheck.com/advisories/openresty-lua-resty-dns-before-0.24-denial-of-service-via-dns-response-parsing"],"sources":[{"name":"CVE","id":"CVE-2026-116013","modified":"2026-10-29T18:23:41.998Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116013"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7}],"sourceAffected":[],"observedAt":"2026-10-29T18:49:52.352Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T14:10:32.801Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T20:40:37.141Z","attemptedAt":"2026-10-29T20:40:37.141Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T20:40:36.754Z","attemptedAt":"2026-10-29T20:40:36.754Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T20:40:36.646Z","attemptedAt":"2026-10-29T20:40:36.646Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T20:40:37.068Z","attemptedAt":"2026-10-29T20:40:37.068Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-109271","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-109271","modified":"Oct 29, 2026, 6:23:41 PM","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","checkedAt":"2026-10-29T20:40:36.646Z"},{"source":"GitHub Advisory Database","id":"GHSA-879w-j376-3fgq","url":"https://github.com/advisories/GHSA-879w-j376-3fgq","modified":"2026-10-24T12:30:31Z","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-10-29T20:40:36.754Z"},{"source":"FIRST EPSS","id":"CVE-2026-116013","url":"https://www.first.org/epss/","probability":0.00288,"percentile":0.21287,"date":"2026-10-29","checkedAt":"2026-10-29T20:40:37.068Z"},{"source":"NVD","id":"CVE-2026-116013","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116013","modified":"2026-10-29T19:17:18.140","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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","checkedAt":"2026-10-29T20:40:37.141Z"},{"source":"NVD","id":"CVE-2026-116013","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116013","modified":"2026-10-29T19:17:18.140","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-10-29T20:40:37.141Z"}],"aiSummary":{"text":"OpenResty lua-resty-dns before 0.24 has an improper input validation vulnerability, allowing attackers to send truncated DNS records and cause a denial of service. This occurs when an attacker controls or spoofs a queried nameserver. The impact is aborted requests and broken name resolution.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:50:34.640Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116013"}]}}