CVE-2026-34593
Atom table exhaustion in Ash Framework before 3.22.0 can crash BEAM VM.
Is CVE-2026-34593 being exploited?
Not confirmed. CVE-2026-34593 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 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-34593?
CVE-2026-34593 is rated High with a CVSS score of 8.2. 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-2026-34593?
Yes. A fix has been recorded for CVE-2026-34593. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34593 affect?
CVE-2026-34593 affects Ash Framework < 3.22.0, Elixir apps using Ash. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34593?
Upgrade Ash to 3.22.0+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker can generate atoms from user input, exhausting the BEAM atom table and crashing the VM, causing DoS.
Patch when possible
- affected< 3.22.0
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.