{"id":"CVE-2026-116013","title":"OpenResty lua-resty-dns before 0.24 Denial of Service via DNS Response Parsing","summary":"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 q…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-130"],"vendor":"openresty","product":"lua-resty-dns","affected":["lua-resty-dns < 0.24"],"published":"2026-10-24","updated":"2026-10-24","sourceUpdated":"2026-10-24T11:40:31.527Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116013","references":[{"url":"https://github.com/openresty/lua-resty-dns/pull/83"},{"url":"https://github.com/openresty/lua-resty-dns/commit/b68eaecbf7997ac71c08ba56032b1f45438bd758"},{"url":"https://github.com/openresty/lua-resty-dns/blob/v0.23/lib/resty/dns/resolver.lua#L396-L442"},{"url":"https://github.com/openresty/lua-resty-dns/tree/v0.24"},{"url":"https://www.vulncheck.com/advisories/openresty-lua-resty-dns-before-0.24-denial-of-service-via-dns-response-parsing","label":"VulnCheck Advisory: OpenResty lua-resty-dns before 0.24 Denial of Service via DNS Response Parsing"}],"tags":["cve.org"],"ingestedAt":"2026-10-24T11:57:47.030Z","slug":"CVE-2026-116013","body":"## Overview\n\nOpenResty 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.\n\n## Affected\n\n- `lua-resty-dns < 0.24`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}