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Vulnerabilities

Vulnerability · 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 th

Published Oct 24, 2026 · catalog updated Oct 25, 2026 · OpenResty lua-resty-dns before 0.24

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-116013. EPSS is 0.29%. Act only if a listed version of OpenResty lua-resty-dns before 0.24 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (OpenResty lua-resty-dns before 0.24).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Advisory link
Affected products
Debian:12 lua-nginx-dns · Debian:13 lua-nginx-dns · Debian:14 lua-nginx-dns · vendor openresty lua-resty-dns

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 lua-nginx-dns0.20-1
  • Debian:13 lua-nginx-dns0.20-1
  • Debian:14 lua-nginx-dns0.20-1
  • vendor openresty lua-resty-dnsversion unspecified

How to fix CVE-2026-116013

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-116013. EPSS is 0.29%. Act only if a listed version of OpenResty lua-resty-dns before 0.24 is installed.

Which versions are affected?

Compare what you have installed with 0.20-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-130. EPSS 0.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian securityNginx security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 24, 2026 · OpenSSF OSV / OSV Scanner

    Detected

  2. Oct 25, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    The description or metadata changed.

  3. Oct 25, 2026 · Trivy Vulnerability DB

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-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

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-116013

    30-day exploitation probability 0.29%

    first.org
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-116013
    osv.dev
  • Trivy Vulnerability DBPackage advisoryDEBIAN-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

    osv.dev

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 25, 2026
  • Trivy Vulnerability DBOct 25, 2026
  • OpenSSF OSV / OSV ScannerOct 25, 2026