OESA-2026-3066

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3066
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3066.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3066
Upstream
Published
2026-07-19T11:11:57Z
Modified
2026-08-18T01:21:20.048105282Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
coredns security update
Details

CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins.

Security Fix(es):

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.(CVE-2025-68151)

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.(CVE-2026-26017)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:24.03-LTS-SP3 / coredns

Package

Name
coredns
Purl
pkg:rpm/openEuler/coredns&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.7.0-1.6.oe2403sp3

Ecosystem specific 

{
    "src": [
        "coredns-1.7.0-1.6.oe2403sp3.src.rpm"
    ],
    "x86_64": [
        "coredns-1.7.0-1.6.oe2403sp3.x86_64.rpm",
        "coredns-help-1.7.0-1.6.oe2403sp3.x86_64.rpm"
    ],
    "aarch64": [
        "coredns-1.7.0-1.6.oe2403sp3.aarch64.rpm",
        "coredns-help-1.7.0-1.6.oe2403sp3.aarch64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3066.json"