CVE catalog
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 QUI
- Severity
- High · CVSS 8.7
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.47% · Oct 25, 2026
A flaw was found in CoreDNS, a DNS server that chains plugins. The DNS-over-QUIC (DoQ) server is vulnerable to unbounded resource growth. An unauthenticated remote attacker can exploit this by opening numerous QUIC streams and sending only one byte per stream, causing the server to spawn excessive goroutines and consume unbounded memory. This leads to memory exhaustion and a Denial of Service (DoS) condition, making the server unresponsive. coredns: github.com/coredns/coredns: CoreDNS: Denial of Service due to unbounded resource growth in DNS-over-QUIC (DoQ) stream handling The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | coredns | Not reported | 1.14.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | coredns | cpe | Not reported | 1.14.3 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_20703-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-32934]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32934.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1283.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]