CVE-2026-86469

Published: Sep 7, 2026Modified: Sep 7, 2026

5.3

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

Exploitability: 1.0 / Impact: 4.2

Source: secalert@redhat.com

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.

Related CWEs

CWE-59

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (4)

https://access.redhat.com/security/cve/CVE-2026-86469

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2473839

Source: secalert@redhat.com

https://gitlab.gnome.org/GNOME/glib/-/blob/main/gio/glocalfileoutputstream.c

Source: secalert@redhat.com

https://gitlab.gnome.org/GNOME/glib/-/work_items/4044

Source: secalert@redhat.com

Timeline

No history available yet.