{"cve":"CVE-2026-41326","nvd":{"published":"2026-04-24T19:17:12.253","modified":"2026-08-24T13:18:33.867","status":"Modified","description":"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.","cvss_v4":{"vector":"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","score":8.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2},"cwes":["CWE-61","CWE-1220"],"references":["https://github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2","https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc","http://www.openwall.com/lists/oss-security/2026/05/13/2","https://access.redhat.com/errata/RHSA-2026:25200","https://access.redhat.com/security/cve/CVE-2026-41326"],"products":["katacontainers:confidential_containers","katacontainers:kata_containers"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-41326","score":0.00348,"percentile":0.28479,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q49m-57vm-c8cc","url":"https://osv.dev/vulnerability/GHSA-q49m-57vm-c8cc","summary":"Kata Container has CopyFile Policy Subversion via Symlinks","modified":"2026-06-25T23:11:30.744783479Z","packages":[{"ecosystem":"Go","name":"github.com/kata-containers/kata-containers","purl":"pkg:golang/github.com/kata-containers/kata-containers","ranges":["<0.0.0-20260422180503-1b9e49eb2763"],"fixed":["0.0.0-20260422180503-1b9e49eb2763"]}]},{"id":"GO-2026-5563","url":"https://osv.dev/vulnerability/GO-2026-5563","summary":"Kata Container has CopyFile Policy Subversion via Symlinks in github.com/kata-containers/kata-containers","modified":"2026-06-25T23:01:30.950803829Z","packages":[{"ecosystem":"Go","name":"github.com/kata-containers/kata-containers","purl":"pkg:golang/github.com/kata-containers/kata-containers","ranges":["<0.0.0-20260422180503-1b9e49eb2763"],"fixed":["0.0.0-20260422180503-1b9e49eb2763"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}