Vulnerability in Flatpak
CVE-2026-96807
In Flatpak before 1.18.1, a malicious sandboxed app can replace ~/.var/app/$appid/.ld.so with a symlink, causing regenerate_ld_cache to write files at an arbitrary location. The filenames and content are not attacker controlled, making this hard to exploit.
Published .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-96807?
- CVE-2026-96807 is a medium-severity vulnerability in Flatpak, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 4.0/10. Published 2026-09-23.
- How severe is CVE-2026-96807?
- Medium severity. CVSS v3 base score is 4.0 out of 10.