CVE-2026-76235

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El gestor de la p\u00e1gina de inicio de sesi\u00f3n fuga una asignaci\u00f3n de pila en cada solicitud no autenticada que lleva una cookie CockpitLang, permitiendo a un atacante remoto no autenticado agotar la memoria en el host y causar una denegaci\u00f3n de servicio."}], "id": "CVE-2026-76235", "lastModified": "2026-11-11T19:17:45.080", "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": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76235", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T01:50:16.317408Z", "version": "2.0.3"}}]}, "published": "2026-08-19T13:18:11.637", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:94485"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:94533"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:96250"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:98463"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:98567"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-76235"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519497"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Arpit Jain for reporting this issue.", "bugzilla": {"description": "cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via CockpitLang cookie in send_login_html", "id": "2519497", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519497"}, "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-401", "details": ["A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service."], "mitigation": {"lang": "en:us", "value": "Restrict network access to the cockpit port to trusted clients until a fix is available. No configuration-level mitigation removes the flaw entirely, since the login page must remain reachable without authentication."}, "name": "CVE-2026-76235", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "impact": "moderate", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "impact": "moderate", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "impact": "moderate", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "impact": "moderate", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Not affected", "package_name": "devspaces/udi-base-rhel10", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Not affected", "package_name": "devspaces/udi-base-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Not affected", "package_name": "devspaces/udi-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2026-08-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-76235\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-76235"], "statement": "Red Hat rates this issue as Moderate impact. Although cockpit-ws is reachable by an unauthenticated remote client and the resulting memory exhaustion can be sustained indefinitely, cockpit-ws is a stateless web console component: its crash or restart does not itself compromise the confidentiality or integrity of the host or of other running services, and the process is automatically restarted by systemd.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat Enterprise Linux 10", "source": "cna", "vendor": "Red Hat"}, "product": "enterprise_linux", "vendor": "redhat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Red Hat OpenShift Dev Spaces", "source": "cna", "vendor": "Red Hat"}, "product": "openshift_dev_spaces", "vendor": "redhat"}], "created": "2026-08-19T20:30:04.684683+00:00", "updated": "2026-08-21T21:16:36.922979+00:00", "vendors": ["redhat", "redhat$PRODUCT$enterprise_linux", "redhat$PRODUCT$openshift_dev_spaces"]}