CVE-2026-32934

Katalog CVE

CVSS 7.5 · High EPSS 0,63%

Kerentanan Allocation of Resources Without Limits or Throttling 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-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 stream. When the worker pool is full, CoreDNS still spawns a goroutine per accepted stream to wait for a worker token. Additionally, active workers block indefinitely in io.ReadFull() with no per-stream read deadline, allowing an attacker to pin all workers by sending a single byte so the read blocks waiting for the second byte of the DoQ length prefix. This enables an unauthenticated remote attacker to cause memory exhaustion and OOM-kill. This issue has been fixed in version 1.14.3. No known workarounds exist.

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-770: Allocation of Resources Without Limits or Throttling

EPSS (30 hari)

0,63% peluang dieksploitasi; lebih tinggi dari 48,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/coredns/coredns/security/advisories/GHSA-2wpx-qpw2-g5h5 exploit · advisory vendor
• https://github.com/coredns/coredns/releases/tag/v1.14.3 release notes