CVE-2026-34430
Deer-Flow sandbox escape enables arbitrary commands.
Is CVE-2026-34430 being exploited?
Not confirmed. CVE-2026-34430 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 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-34430?
CVE-2026-34430 is rated High with a CVSS score of 8.6. 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-2026-34430?
Yes. A fix has been recorded for CVE-2026-34430. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34430 affect?
CVE-2026-34430 affects Deer-Flow (ByteDance) < commit 92c7a20. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34430?
Update to version with commit 92c7a20 or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary host command execution; escape sandbox to read/modify outside sandbox via shell-enabled subprocesses.
Patch when possible
- affected< 92c7a20cb74addc3038d2131da78f2e239ef542e
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.