CVE-2026-34079
Flatpak <=1.16.3 can delete host files via ld.so cache bypass.
Is CVE-2026-34079 being exploited?
Not confirmed. CVE-2026-34079 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-34079?
CVE-2026-34079 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-34079?
Yes. A fix has been recorded for CVE-2026-34079. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34079 affect?
CVE-2026-34079 affects Flatpak <= 1.16.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34079?
Upgrade to Flatpak 1.16.4+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local: a Flatpak app can delete arbitrary host files by exploiting flawed ld.so cache handling (pre-1.16.4).
Patch when possible
- affected< 1.16.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.