{"id":"CVE-2026-84268","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-84268","summary":"A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested…","details":"A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution.","published":"2026-09-01T16:17:37.563","modified":"2026-09-02T14:17:16.170","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-84268"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2526485"},{"type":"WEB","url":"https://gitlab.gnome.org/GNOME/gvfs/-/issues/862"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-02T14:17:16.170"}}