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CVE-2026-86469

Glib2: toctou symlink race in `g_file_create_replace_destination` fallback path

CVSS 3.1 5.3 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-86469

Published

A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.

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Affected versions, risk and source history

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CVE-2026-86469 · CVE overview and exploitation status

cve-program · CVE-2026-86469

Related changes

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