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CVE-2026-35579

A flaw was found in CoreDNS. An unauthenticated network attacker can exploit incorrect handling of TSIG (Transaction Signature) authentication in the gRPC, QUIC, DoH (DNS over HTTPS), and DoH3 transport implementations. This vulnerability allows an attacker to bypass TSIG protection, leading to unauthorized access to functionalities such as zone transfers and dynamic DNS updates. For DoH and DoH3, the issue is more severe as any request with a TSIG record is treated as authenticated, even with a
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:de8c50743b5bb21381df7388c63194747ad2553a814f34723458a2f821e7ad39
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"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:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/affected/0

{"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:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/affected/2

{"product":"coredns","vendor":"coredns","versions":[{"status":"affected","version":"< 1.14.3"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:acm:2"],"defaultStatus":"unaffected","packageName":"rhacm2/lighthouse-agent-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/affected/1
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-303","description":"Incorrect Implementation of Authentication Algorithm","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

4 source assertions
{"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:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/affected/0
{"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:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/affected/2
{"product":"coredns","vendor":"coredns","versions":[{"status":"affected","version":"< 1.14.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:acm:2"],"defaultStatus":"unaffected","packageName":"rhacm2/lighthouse-agent-rhel9","product":"Red Hat Advanced Cluster Management for Kubernetes 2","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/affected/1

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-303","description":"Incorrect Implementation of Authentication Algorithm","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

6 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:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/references/3
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-35579"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/references/0
{"name":"RHBZ#2466905","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466905"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/1/references/1
{"name":"https://github.com/coredns/coredns/security/advisories/GHSA-vp29-5652-4fw9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coredns/coredns/security/advisories/GHSA-vp29-5652-4fw9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/coredns/coredns/security/advisories/GHSA-vp29-5652-4fw9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /containers/adp/0/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35579.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9d9ca802d918cd73fdc771df571fb52c1afb46e1ce0fa5197608c13ad573c84 · sha256:f3a348195176576c… · /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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