CVE-2026-86469

MEDIUMCVSS 5.3

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.

Timeline

Published:September 7th, 2026 4:17 PM

Last modified:September 7th, 2026 4:17 PM

CVSS Scoring

CVSS v3: 5.3 (MEDIUM)

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

Weaknesses (CWE)

CWE-59

References & Reports

Advisories, patches, and third-party reports

https://access.redhat.com/security/cve/CVE-2026-86469
https://bugzilla.redhat.com/show_bug.cgi?id=2473839
https://gitlab.gnome.org/GNOME/glib/-/blob/main/gio/glocalfileoutputstream.c
https://gitlab.gnome.org/GNOME/glib/-/work_items/4044

Source: NIST NVD · Data may lag official sources by up to one minute