Is CVE-2026-86469 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-86469?

CVE-2026-86469 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-86469

Description

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.