CVE-2026-86469
mediumA flaw was found in GLib2.
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
5.3
5.3 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-09-07 16:17
Modified: 2026-09-08 19:08
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 06:51 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/security/cve/CVE-2026-86469 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2473839 secalert@redhat.com
- https://gitlab.gnome.org/GNOME/glib/-/blob/main/gio/glocalfileoutputstream.c secalert@redhat.com
- https://gitlab.gnome.org/GNOME/glib/-/work_items/4044 secalert@redhat.com
- https://gitlab.gnome.org/GNOME/glib/-/work_items/4044 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:51 UTC · record ↗