CVE-2026-26018

Name
CVE-2026-26018
Description
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/coredns/coredns/releases/tag/v1.14.2
security-advisories@github.com https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:25127
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:8151
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/security/cve/CVE-2026-26018
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://bugzilla.redhat.com/show_bug.cgi?id=2445242
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26018.json
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:36873

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:* coredns >= None < 1.14.2

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
coredns edge-community 1.13.2-r6 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.13.2-r5 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.13.2-r4 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.13.2-r3 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.13.2-r2 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.13.2-r1 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.13.2-r0 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.12.3-r5 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.12.3-r4 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.12.3-r3 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.12.3-r2 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns edge-community 1.12.3-r1 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.3-r0 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.2-r1 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.2-r0 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.1-r2 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.1-r1 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.1-r0 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.0-r5 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.0-r4 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.0-r3 fossdd <fossdd@pwned.life> possibly vulnerable
coredns edge-community 1.12.0-r1 Mark Pashmfouroush <mark@markpash.me> possibly vulnerable
coredns edge-community 1.12.0-r0 Mark Pashmfouroush <mark@markpash.me> possibly vulnerable
coredns edge-community 1.11.3-r0 Mark Pashmfouroush <mark@markpash.me> possibly vulnerable
coredns edge-community 1.9.3-r0 Mark Pashmfouroush <mark@markpash.me> possibly vulnerable
coredns 3.24-community 1.13.2-r6 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.24-community 1.13.2-r5 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.23-community 1.12.3-r10 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.23-community 1.12.3-r9 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.23-community 1.12.3-r8 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.23-community 1.12.3-r7 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.23-community 1.12.3-r6 Achill Gilgenast <achill@achill.org> possibly vulnerable
coredns 3.23-community 1.12.3-r5 Achill Gilgenast <achill@achill.org> possibly vulnerable