What is CVE-2026-32934?

CVE-2026-32934 is a high-severity vulnerability in Coredns, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-05.

How severe is CVE-2026-32934?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Coredns

CVE-2026-32934

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-QUIC (DoQ) server can be driven into unbounded goroutine and memory growth by a remote client that opens many QUIC streams and sends only 1 byte per str…

EPSS: 0.002 (46.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Coredns — versions < 1.14.3
Coredns.io Coredns

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

https://github.com/coredns/coredns/security/advisories/GHSA-2wpx-qpw2-g5h5 (x_refsource_CONFIRM, Exploit, Vendor Advisory)
https://github.com/coredns/coredns/releases/tag/v1.14.3 (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-32934?: CVE-2026-32934 is a high-severity vulnerability in Coredns, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-05.
How severe is CVE-2026-32934?: High severity. CVSS v3 base score is 7.5 out of 10.