{"id":"CVE-2026-116013","revision":null,"records":[{"revision":"bde84bca10de486cb49e878aa5a2c0ce","observedAt":"2026-10-24T13:07:03.442+00:00","statement":{"source":"cve-program","id":"CVE-2026-116013","aliases":[],"title":"OpenResty lua-resty-dns before 0.24 Denial of Service via DNS Response Parsing","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.","state":0,"publishedAt":"2026-10-24T11:40:31.527+00:00","modifiedAt":"2026-10-24T11:40:31.527+00:00","affected":[{"ecosystem":"Vendor product","name":"lua-resty-dns","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openresty\",\n                    \"product\": \"lua-resty-dns\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"0.24\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/openresty/lua-resty-dns\"\n                }"}],"metrics":[{"system":"CVSS 4.0","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,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7,"severity":"LOW"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116013","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116013","identifiers":["CVE-2026-116013"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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