CVE-2026-26018

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Este problema ha sido parcheado en la versi\u00f3n 1.14.2."}], "id": "CVE-2026-26018", "lastModified": "2026-07-15T02:18:59.577", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26018", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-06T16:07:22.371186Z", "version": "2.0.3"}}]}, "published": "2026-03-06T16:16:10.557", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/coredns/coredns/releases/tag/v1.14.2"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:25127"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36873"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:8151"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-26018"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445242"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26018.json"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-337"}, {"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-1241"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "github.com/coredns/coredns: CoreDNS: Denial of Service vulnerability due to predictable pseudo-random number generation", "id": "2445242", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445242"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1241", "details": ["No description is available for this CVE."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-26018", "package_state": [{"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/lighthouse-agent-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/lighthouse-coredns-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:connectivity_link:1", "fix_state": "Affected", "package_name": "rhcl-1/coredns-rhel9", "product_name": "Red Hat Connectivity Link 1"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift4/ose-coredns-rhel9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-03-06T15:35:50Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-26018\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-26018\nhttps://github.com/coredns/coredns/releases/tag/v1.14.2\nhttps://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.14.2)"}}], "enrichment": {"confidence": 91.0, "confidence_source": "matching", "scores": [{"score": 91.0, "source": "matching"}]}, "original": {"product": "coredns", "source": "cna", "vendor": "coredns"}, "product": "coredns", "vendor": "coredns.io"}], "analysis": {"en": {"generated_at": "2026-04-16T11:20:56.316025+00:00", "value": {"mitigation_remediation": ["Upgrade CoreDNS to version\u202f1.14.2 or later.", "Configure rate\u2011limiting on DNS queries to lessen the impact of any future exploitation attempts.", "Set up monitoring of DNS logs to detect abnormal query patterns that may indicate probing for this fault."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "CoreDNS, the DNS server software chain used by many container and cloud deployments. Versions earlier than 1.14.2 are affected; the vulnerability was fixed in the 1.14.2 release.", "description_and_impact": "The flaw resides in CoreDNS\u2019s loop detection plugin. An attacker can craft DNS queries that exploit the predictable pseudo\u2011random number generator used to generate secret query names, causing the plugin to raise a fatal error that terminates the entire DNS server. The outcome is a denial of service that can disrupt all clients relying on that DNS service. The weakness encompasses predictable PRNG use (CWE\u2011337), uncontrolled resource exhaustion (CWE\u2011400), and other related vulnerabilities (CWE\u20111241, CWE\u2011770).", "risk_and_exploitability": "With a CVSS score of 7.5 the vulnerability is considered high severity. The EPSS score is below 1\u202f%, indicating a low probability of current exploitation, and it has not appeared in the CISA Known Exploited Vulnerabilities catalog. The attack vector is inferred to be remote over the network, since an attacker only needs to send a specially crafted DNS query. A single successful request can crash the entire server, making rapid mitigation essential to preserve DNS availability."}}}}, "created": "2026-03-09T10:07:23.561006+00:00", "updated": "2026-04-16T11:30:15.901526+00:00", "vendors": ["coredns.io", "coredns.io$PRODUCT$coredns"]}