{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41326","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-20T14:01:46.672Z","datePublished":"2026-04-24T18:46:21.993Z","dateUpdated":"2026-06-30T12:06:00.693Z"},"containers":{"cna":{"title":"Kata Containers: CopyFile Policy Subversion via Symlinks","problemTypes":[{"descriptions":[{"cweId":"CWE-61","lang":"en","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc"},{"name":"https://github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2","tags":["x_refsource_MISC"],"url":"https://github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2"}],"affected":[{"vendor":"kata-containers","product":"kata-containers","versions":[{"version":">= 3.4.0, < 3.29.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-04T16:03:37.932Z"},"descriptions":[{"lang":"en","value":"Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. From v3.4.0 to v3.28.0, an oversight in the CopyFile policy (and perhaps the CopyFile handler) allows untrusted hosts to write to arbitrary locations inside the guest workload image. This can be used to overwrite binaries inside the guest and exfiltrate data from containers; even those running inside CVMs. This vulnerability is fixed in v3.29.0."}],"source":{"advisory":"GHSA-q49m-57vm-c8cc","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-27T13:43:48.851429Z","id":"CVE-2026-41326","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-27T13:43:53.436Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/13/2"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-05-13T05:17:44.571Z"}},{"affected":[{"cpes":["cpe:/a:redhat:openshift:4.19::el9"],"defaultStatus":"affected","product":"Red Hat OpenShift Container Platform 4.19","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:confidential_compute_attestation:1"],"defaultStatus":"affected","product":"Confidential Compute Attestation","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift:4"],"defaultStatus":"affected","product":"Red Hat OpenShift Container Platform 4","vendor":"Red Hat"}],"datePublic":"2026-04-22T19:01:25.112Z","descriptions":[{"lang":"en","value":"A flaw was found in Kata Containers.  An oversight in the CopyFile policy (and perhaps the CopyFile handler) allows untrusted hosts to write to arbitrary locations inside the guest workload image. This can be used to overwrite binaries inside the guest and exfiltrate data from containers; even those running inside CVMs."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1220","description":"Insufficient Granularity of Access Control","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-41326"},{"name":"RHBZ#2460859","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460859"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41326.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:25200"}],"solutions":[{"lang":"en","value":"RHSA-2026:25200: Red Hat OpenShift Container Platform 4.19"}],"timeline":[{"lang":"en","time":"2026-04-22T19:00:36.343Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-04-22T19:01:25.112Z","value":"Made public."}],"title":"kata-containers: Arbitrary file write inside guest image via CopyFile policy","workarounds":[{"lang":"en","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."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:06:00.693Z"}}]}}