CVE-2026-4878

{"id": "CVE-2026-4878", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "published": "2026-04-09T16:16:31.987", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:12423", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:12441", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:13285", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:14162", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:14937", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:19130", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:19346", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:19456", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:19458", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20595", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21254", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21275", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:22634", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:22957", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23233", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23245", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24346", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:25096", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:7473", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-4878", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447554", "tags": ["Permissions Required"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451615", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/07/14", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/07/4", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/08/9", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/09/5", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/09/6", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation."}], "lastModified": "2026-06-11T10:16:21.370", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:libcap_project:libcap:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B5642B48-2305-41CC-9D9D-110EAC065B08"}, {"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: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"}