{"api_version":"1","generated_at":"2026-08-19T11:44:42+00:00","cve":"CVE-2026-49431","urls":{"html":"https://cve.report/CVE-2026-49431","api":"https://cve.report/api/cve/CVE-2026-49431.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-49431","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49431"},"summary":{"title":"Incorrect user validation in ZFS_IOC_SET_PROP ioctl","description":"The ZFS_IOC_SET_PROP ioctl, used by zfs-set(8), incorrectly validated the calling user such that an unprivileged user is able to set metadata on a dataset indicating that the dataset has received properties from a zfs-recv(8) stream.\n\nAny local user can set the internal ZFS metadata flag \"$hasrecvd\" on datasets via ZFS_IOC_SET_PROP.","state":"PUBLISHED","assigner":"freebsd","published_at":"2026-08-19 06:17:43","updated_at":"2026-08-19 06:17:43"},"problem_types":["CWE-863","CWE-863 CWE-863: Incorrect 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Yang, Yizhou Zhao, Ao Wang, Xuewei Feng, Qi Li, and Ke Xu from Tsinghua University using GLM-5.1 from Z.ai"},{"lang":"en","type":"finder","value":"Emmanuel Genier at Quarkslab"}],"datePublic":"2026-06-30T20:00:00.000Z","descriptions":[{"lang":"en","value":"The ZFS_IOC_SET_PROP ioctl, used by zfs-set(8), incorrectly validated the calling user such that an unprivileged user is able to set metadata on a dataset indicating that the dataset has received properties from a zfs-recv(8) stream.\n\nAny local user can set the internal ZFS metadata flag \"$hasrecvd\" on datasets via ZFS_IOC_SET_PROP."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-19T05:15:37.371Z","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd"},"references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:40.zfs.asc"}],"title":"Incorrect user validation in ZFS_IOC_SET_PROP ioctl","x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","assignerShortName":"freebsd","cveId":"CVE-2026-49431","datePublished":"2026-08-19T05:15:37.371Z","dateReserved":"2026-05-29T20:24:28.617Z","dateUpdated":"2026-08-19T05:15:37.371Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-19 06:17:43","lastModifiedDate":"2026-08-19 06:17:43","problem_types":["CWE-863","CWE-863 CWE-863: Incorrect Authorization"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"49431","Ordinal":"1","Title":"Incorrect user validation in ZFS_IOC_SET_PROP ioctl","CVE":"CVE-2026-49431","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"49431","Ordinal":"1","NoteData":"The ZFS_IOC_SET_PROP ioctl, used by zfs-set(8), incorrectly validated the calling user such that an unprivileged user is able to set metadata on a dataset indicating that the dataset has received properties from a zfs-recv(8) stream.\n\nAny local user can set the internal ZFS metadata flag \"$hasrecvd\" on datasets via ZFS_IOC_SET_PROP.","Type":"Description","Title":"Incorrect user validation in ZFS_IOC_SET_PROP ioctl"}]}}}