CVE-2026-116013

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 v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

24 Oct 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-24 12:16

Updated : 2026-10-29 19:17

NVD link : CVE-2026-116013

Mitre link : CVE-2026-116013

CVE.ORG link : CVE-2026-116013

JSON object : View

Products Affected

No product.

CWE

CWE-130

Improper Handling of Length Parameter Inconsistency

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