CVE-2026-93676: Improper Access Control in Red Hat Red Hat Enterprise Linux 10
xdg-dbus-proxy incorrectly filters D-Bus broadcast messages, bypassing configured path, interface, and member restrictions. This allows a sandboxed Flatpak application to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially exposing sensitive information to unauthorized applications.
AI Analysis
Technical Summary
The xdg-dbus-proxy component in Red Hat Enterprise Linux 10 incorrectly filters D-Bus broadcast messages, bypassing restrictions on path, interface, and member. This flaw enables sandboxed Flatpak applications to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially leaking sensitive information to unauthorized applications. The CVSS 3.1 base score is 3.2, reflecting low severity with local attack vector, low complexity, requiring privileges and user interaction, and limited confidentiality impact.
Potential Impact
An attacker with a sandboxed Flatpak application can intercept broadcast signals on the D-Bus session and AT-SPI buses that should be restricted, potentially exposing sensitive information. There is no impact on integrity or availability. The confidentiality impact is limited.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-93676 for current remediation guidance.
CVE-2026-93676: Improper Access Control in Red Hat Red Hat Enterprise Linux 10
Description
xdg-dbus-proxy incorrectly filters D-Bus broadcast messages, bypassing configured path, interface, and member restrictions. This allows a sandboxed Flatpak application to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially exposing sensitive information to unauthorized applications.
CVSS v3.1
Score 3.2low
Affected software
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 9
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The xdg-dbus-proxy component in Red Hat Enterprise Linux 10 incorrectly filters D-Bus broadcast messages, bypassing restrictions on path, interface, and member. This flaw enables sandboxed Flatpak applications to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially leaking sensitive information to unauthorized applications. The CVSS 3.1 base score is 3.2, reflecting low severity with local attack vector, low complexity, requiring privileges and user interaction, and limited confidentiality impact.
Potential Impact
An attacker with a sandboxed Flatpak application can intercept broadcast signals on the D-Bus session and AT-SPI buses that should be restricted, potentially exposing sensitive information. There is no impact on integrity or availability. The confidentiality impact is limited.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-93676 for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-09-18T13:51:38.463Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-93676","vendor":"Red Hat"}]
Threat ID: 6aad4b7555bf5e2cf51f5ed5
Added to database: 09/18/2026, 14:32:21 UTC
Last enriched: 09/18/2026, 14:47:01 UTC
Last updated: 09/19/2026, 01:04:22 UTC
Views: 12
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