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CVE-2026-26018

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:807a2cb757a6beda2b4fb9ffe575289c33301578b35ab894c5a4d34dd0dda543
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 8 assertions

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.13::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-agent-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.13","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1782924920","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/0

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.14::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-coredns-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.14","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1780204249","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"],"defaultStatus":"unaffected","packageName":"openshift4/ose-coredns-rhel9","product":"Red Hat OpenShift Container Platform 4","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/6

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.15::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-coredns-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.15","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1774086225","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:connectivity_link:1"],"defaultStatus":"affected","packageName":"rhcl-1/coredns-rhel9","product":"Red Hat Connectivity Link 1","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/5

{"product":"coredns","vendor":"coredns","versions":[{"status":"affected","version":"< 1.14.2"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/affected/0

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.14::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-agent-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.14","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1780204232","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/2

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.13::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-coredns-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.13","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1782924937","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/1
cwe · 4 assertions

{"cweId":"CWE-337","description":"CWE-337: Predictable Seed in Pseudo-Random Number Generator (PRNG)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-1241","description":"Use of Predictable Algorithm in Random Number Generator","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/problemTypes/2/descriptions/0

Affected products and versions

8 source assertions
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.13::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-agent-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.13","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1782924920","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/0
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.14::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-coredns-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.14","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1780204249","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"],"defaultStatus":"unaffected","packageName":"openshift4/ose-coredns-rhel9","product":"Red Hat OpenShift Container Platform 4","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/6
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.15::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-coredns-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.15","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1774086225","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:connectivity_link:1"],"defaultStatus":"affected","packageName":"rhcl-1/coredns-rhel9","product":"Red Hat Connectivity Link 1","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/5
{"product":"coredns","vendor":"coredns","versions":[{"status":"affected","version":"< 1.14.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/affected/0
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.14::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-agent-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.14","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1780204232","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/2
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:acm:2.13::el9"],"defaultStatus":"affected","packageName":"rhacm2/lighthouse-coredns-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2.13","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1782924937","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/affected/1

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/metrics/1/cvssV3_1

CWE assertions

4 source assertions
{"cweId":"CWE-337","description":"CWE-337: Predictable Seed in Pseudo-Random Number Generator (PRNG)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-1241","description":"Use of Predictable Algorithm in Random Number Generator","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/problemTypes/2/descriptions/0

Source references

8 source assertions
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:25127"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/references/4
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:36873"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/references/3
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:8151"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/references/5
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-26018"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/references/0
{"name":"RHBZ#2445242","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2445242"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/references/1
{"name":"https://github.com/coredns/coredns/releases/tag/v1.14.2","tags":["x_refsource_MISC"],"url":"https://github.com/coredns/coredns/releases/tag/v1.14.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/references/1
{"name":"https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26018.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8a0463153fd81064a41e6f92b2c8035267fd8abd217c975ca10342193322e527 · sha256:b16b20dedde11bfb… · /containers/adp/1/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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