CVE-2026-116013

EUVD-2026-109271
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.7 LOW
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/openresty/lua-resty-dns/blob/v0.23/lib/resty/dns/resolver.lua#L396-L442
https://github.com/openresty/lua-resty-dns/commit/b68eaecbf7997ac71c08ba56032b1f45438bd758
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-of-service-via-dns-response-parsing