CVE-2026-86469

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-07 16:17

Updated : 2026-09-08 19:08

NVD link : CVE-2026-86469

Mitre link : CVE-2026-86469

CVE.ORG link : CVE-2026-86469

JSON object : View

Products Affected

No product.

CWE

CWE-59

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

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