CVE-2026-32936

Katalog CVE

CVSS 7.5 · High EPSS 0,61%

Kerentanan Uncontrolled Resource Consumption pada coredns.io coredns. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-HTTPS (DoH) GET path accepts oversized dns= query parameter values and performs URL query parsing, base64 decoding, and DNS message unpacking before rejecting the request. Unlike the POST path, which applies a bounded read via http.MaxBytesReader limited to 65536 bytes, the GET path has no equivalent size validation before expensive processing. A remote, unauthenticated attacker can repeatedly send oversized DoH GET requests to force high CPU usage, large transient memory allocations, and elevated garbage-collection pressure, leading to denial of service. This issue has been fixed in version 1.14.3.

Rincian

Terbit di NVD

5 Mei 2026

Terakhir diubah

25 Juli 2026

Status NVD

Analyzed

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption

EPSS (30 hari)

0,61% peluang dieksploitasi; lebih tinggi dari 48,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/coredns/coredns/security/advisories/GHSA-63cw-r7xf-jmwr exploit · mitigasi · advisory vendor
• https://github.com/coredns/coredns/releases/tag/v1.14.3 release notes