CVE-2026-3832
Estado: ModificadaBaja (3.7)—
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Puntuación base: 3.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.85%
- Percentil entre todas las CVEs puntuadas: 57
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (4)
CWE
- CWE-179
Referencias
- https://access.redhat.com/errata/RHSA-2026:13274
- https://access.redhat.com/errata/RHSA-2026:20612
- https://access.redhat.com/errata/RHSA-2026:20613
- https://access.redhat.com/errata/RHSA-2026:26319
- https://access.redhat.com/errata/RHSA-2026:26409
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:72502
- https://access.redhat.com/security/cve/CVE-2026-3832
- https://bugzilla.redhat.com/show_bug.cgi?id=2445762
- https://gitlab.com/gnutls/gnutls/-/issues/1801
- https://gitlab.com/gnutls/gnutls/-/issues/1801
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-3832",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3832",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-04-30T18:22:07.438915Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 3.7,
"attackVector": "NETWORK",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 2.2
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "3.8.13",
"versionType": "semver"
}
],
"packageName": "gnutls",
"collectionURL": "https://gitlab.com/gnutls/gnutls",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 10",
"versions": [
{
"status": "unaffected",
"version": "0:3.8.10-4.el10_2",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "gnutls",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux_eus:10.0"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:3.8.9-9.el10_0.19",
"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: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:cert_manager:1.20::el9"
],
"vendor": "Red Hat",
"product": "Cert Manager support for Red Hat OpenShift release 1.20",
"versions": [
{
"status": "unaffected",
"version": "1790598593",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "cert-manager/cert-manager-trust-manager-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": "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:/a:redhat:rhui:5::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Update Infrastructure 5",
"versions": [
{
"status": "unaffected",
"version": "1787241211",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhui5/cds-kubernetes-tp-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": "1787135742",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhui5/installer-tp-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": "1787241260",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhui5/rhua-tp-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": "unaffected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"packageName": "gnutls",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"packageName": "gnutls",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"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"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4",
"packageName": "openshift/ose-rhel-coreos-8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4",
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
}
]
}
],
"published": "2026-04-30T18:16:30.433",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:13274",
"tags": [
"Third Party Advisory"
],
"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-2026:58981",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:72502",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-3832",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445762",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://gitlab.com/gnutls/gnutls/-/issues/1801",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://gitlab.com/gnutls/gnutls/-/issues/1801",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-179"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust."
}
],
"lastModified": "2026-09-29T01:16:47.740",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gnu:gnutls:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "33A22858-21E1-479F-A9C4-AD2EFD059B93"
},
{
"criteria": "cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "87DEB507-5B64-47D7-9A50-3B87FD1E571F"
},
{
"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert@redhat.com"
}