What is CVE-2025-68151?

CVE-2025-68151 is a high-severity vulnerability in Coredns, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-08.

How severe is CVE-2025-68151?

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

Resource exhaustion in Coredns

CVE-2025-68151

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations (gRPC, HTTPS, and HTTP/3) lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is similar in nature to CVE-2025-47950 (QUIC DoS) but affects additional server types that do not enforce connection limits, stream limits, or message size constraints. Version 1.14.0 contains a patch.

EPSS: 0.004 (36.7th 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 < 1.14.0
Coredns.io Coredns

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-68151?: CVE-2025-68151 is a high-severity vulnerability in Coredns, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-08.
How severe is CVE-2025-68151?: High severity. CVSS v3 base score is 7.5 out of 10.