{"id":"CVE-2026-45576","aliases":["GHSA-c656-jcx2-7pqj","GO-2026-5315"],"url":"https://o3.security/vulnerability/CVE-2026-45576","summary":"zrok copy writes attacker-controlled WebDAV paths outside the destination root","details":"## Summary\n\nAlice runs `zrok2 copy` from a WebDAV or zrok drive controlled by Bob into a local filesystem target. Bob returns a DAV `href` such as `/../outside.txt`. The sync pipeline stores that path in the source inventory and passes it to `FilesystemTarget.WriteStream`, which joins it with the target root and creates the file outside Alice's selected directory.\n\n### Impact\nUsers given access to a zrok share may be able to traverse the directory tree arbitrarily with the sharing users credentials, allowing for sensitive information to be overwritten.","published":"2026-07-16T16:45:52.766Z","modified":"2026-08-12T03:51:37.198239816Z","cvss":null,"epss":{"score":0.00341,"percentile":0.27152,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/openziti/zrok/v2","fixedVersion":"2.0.3"},{"ecosystem":"Go","name":"github.com/openziti/zrok","fixedVersion":null}],"fix":{"url":"https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457","label":"openziti/zrok@a5811e6"},"references":[{"type":"WEB","url":"https://github.com/openziti/zrok/releases/tag/v2.0.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45576.json"},{"type":"ADVISORY","url":"https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45576"},{"type":"FIX","url":"https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457"},{"type":"PACKAGE","url":"https://github.com/openziti/zrok"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:37.198239816Z"}}