What is CVE-2026-35406?

CVE-2026-35406 is a medium-severity vulnerability in Containers Aardvark-Dns, classified under Uncontrolled Resource Consumption. CVSS score: 6.2/10. Published 2026-04-07.

How severe is CVE-2026-35406?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Resource exhaustion in Containers Aardvark-Dns

CVE-2026-35406

Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.004 (30.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Containers Aardvark-dns — versions >= 1.16.0, < 1.17.1

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-35406?: CVE-2026-35406 is a medium-severity vulnerability in Containers Aardvark-Dns, classified under Uncontrolled Resource Consumption. CVSS score: 6.2/10. Published 2026-04-07.
How severe is CVE-2026-35406?: Medium severity. CVSS v3 base score is 6.2 out of 10.