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        "state": "PUBLISHED",
        "assignerShortName": "mitre",
        "dateReserved": "2026-09-12T20:00:58.046Z",
        "datePublished": "2026-09-12T20:00:58.476Z",
        "dateUpdated": "2026-09-12T20:00:58.476Z"
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                    "repo": "https://github.com/flatpak/flatpak",
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                    "value": "In Flatpak before 1.18.1, a malicious sandboxed app can obtain arbitrary read and write access to files on the host, which can be escalated to arbitrary code execution on the host, a different vulnerability than CVE-2026-76925. Flatpak creates a few app data directories (e.g., /var/cache, /var/data, /var/config, and /var/tmp) in every sandbox on every app launch where, in some cases, components of the path are attacker-controlled. Missing symlink protection can redirect the directories. Some of these directories are bind-mounted by Flatpak by passing the path (e.g., /home/user/.var/app/APP_ID/cache/tmp), which contains attacker-controlled directories (tmp) to bwrap --bind SRC DST. bwrap passes the path on to the kernel, which then follows symlinks. A malicious symlink can point to arbitrary locations on the host and it will become mounted inside the sandbox."
                }
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                        "baseScore": 7.4,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
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                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
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                            "description": "CWE-61 UNIX Symbolic Link (Symlink) Following",
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                {
                    "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-8688-9x26-hhxj"
                },
                {
                    "url": "https://www.openwall.com/lists/oss-security/2026/08/11/9"
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