8.8
High
CVE-2026-96275 Flatpak: flatpak: arbitrary write access as root via extra-data extraction
Description
A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 9.6 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 10.0 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | Versions not published |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | Versions not published |
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