Vulnerability 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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/openresty/lua-resty-dns/blob/v0.23/lib/resty/dns/resolver.lua
- https://github.com/openresty/lua-resty-dns/commit/b68eaecbf7997ac71c08ba56032b1f
- https://github.com/openresty/lua-resty-dns/pull/83
- https://github.com/openresty/lua-resty-dns/tree/v0.24
- https://www.vulncheck.com/advisories/openresty-lua-resty-dns-before-0.24-denial-
FAQ
What is CVE-2026-116013?
CVE-2026-116013 is a vulnerability with a CVSS score of 3.7 (LOW). 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. ...
How severe is CVE-2026-116013?
CVE-2026-116013 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116013?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.