CVE-2026-42013

{"id": "CVE-2026-42013", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42013", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-28T14:13:44.668002Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "secalert@redhat.com", "affectedData": [{"cpes": ["cpe:/o:redhat:enterprise_linux:10.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 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"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream", "cpe:/o:redhat:rhel_aus:8.4::baseos", "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:3.6.14-10.el8_4.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream", "cpe:/o:redhat:rhel_aus:8.4::baseos", "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:4.13-3.el8_4.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "libtasn1", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream", "cpe:/o:redhat:rhel_aus:8.6::baseos", "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:3.6.16-5.el8_6.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream", "cpe:/o:redhat:rhel_aus:8.6::baseos", "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:4.13-3.el8_6.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "libtasn1", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream", "cpe:/o:redhat:rhel_aus:8.6::baseos", "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:3.6.16-5.el8_6.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream", "cpe:/o:redhat:rhel_aus:8.6::baseos", "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:4.13-3.el8_6.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "libtasn1", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream", "cpe:/o:redhat:rhel_e4s:8.8::baseos", "cpe:/o:redhat:rhel_tus:8.8::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:3.6.16-7.el8_8.4", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream", "cpe:/o:redhat:rhel_e4s:8.8::baseos", "cpe:/o:redhat:rhel_tus:8.8::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:4.13-4.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "libtasn1", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream", "cpe:/o:redhat:rhel_e4s:8.8::baseos", "cpe:/o:redhat:rhel_tus:8.8::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:3.6.16-7.el8_8.4", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream", "cpe:/o:redhat:rhel_e4s:8.8::baseos", "cpe:/o:redhat:rhel_tus:8.8::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:4.13-4.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "libtasn1", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/o:redhat:enterprise_linux:9::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:3.8.10-4.el9_8", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/o:redhat:enterprise_linux:9::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:3.8.10-4.el9_8", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream", "cpe:/o:redhat:rhel_e4s:9.2::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:3.7.6-21.el9_2.7", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream", "cpe:/o:redhat:rhel_e4s:9.4::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:3.8.3-4.el9_4.6", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/o:redhat:rhel_eus:9.6::baseos"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:3.8.3-6.el9_6.4", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift:4.19::el9"], "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4.19", "versions": [{"status": "unaffected", "version": "4.19.9.6.202607151909-0", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhcos", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:discovery:2::el9"], "vendor": "Red Hat", "product": "Red Hat Discovery 2", "versions": [{"status": "unaffected", "version": "1782159791", "lessThan": "*", "versionType": "rpm"}], "packageName": "discovery/discovery-server-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:discovery:2::el9"], "vendor": "Red Hat", "product": "Red Hat Discovery 2", "versions": [{"status": "unaffected", "version": "1782166952", "lessThan": "*", "versionType": "rpm"}], "packageName": "discovery/discovery-ui-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:hummingbird:1"], "vendor": "Red Hat", "product": "Red Hat Hardened Images", "versions": [{"status": "unaffected", "version": "3.8.13-1.hum1", "lessThan": "*", "versionType": "rpm"}], "packageName": "gnutls-main", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhui:5::el9"], "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "versions": [{"status": "unaffected", "version": "1781525684", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhui5/cds-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhui:5::el9"], "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "versions": [{"status": "unaffected", "version": "1781525671", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhui5/haproxy-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhui:5::el9"], "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "versions": [{"status": "unaffected", "version": "1781525693", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhui5/installer-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhui:5::el9"], "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "versions": [{"status": "unaffected", "version": "1781525739", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhui5/rhua-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "gnutls", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/a:redhat:openshift:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "packageName": "openshift4/ose-hypershift-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}]}], "published": "2026-05-26T22:16:42.050", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:13274", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20611", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20612", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20613", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:26319", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:26409", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:29197", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:30004", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:30849", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:30850", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:32962", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:33125", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:40762", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:41921", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:43575", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-42013", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467448", "source": "secalert@redhat.com"}, {"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-8", "source": "secalert@redhat.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-295"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks."}, {"lang": "es", "value": "Se descubri\u00f3 un fallo en gnutls. Al validar certificados, un Subject Alternative Name (SAN) de tama\u00f1o excesivo podr\u00eda hacer que el proceso de validaci\u00f3n recurriera incorrectamente a la comprobaci\u00f3n del campo Common Name (CN). Esto podr\u00eda permitir a un atacante remoto eludir la validaci\u00f3n correcta del certificado, lo que podr\u00eda conducir a ataques de suplantaci\u00f3n de identidad o man-in-the-middle."}], "lastModified": "2026-07-24T11:10:00.170", "sourceIdentifier": "secalert@redhat.com"}