CVE-2026-82722 AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node DoS)
Attackers can crash the entire Elixir node by exhausting the atom table via unvalidated client input in AshAdmin LiveView events.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-82722?
CVE-2026-82722 is a high-severity denial of service vulnerability in ash-project ash_admin, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node.
Two LiveView event handlers interned atoms from unvalidated client input: AshAdmin.PageLive's set_actor built modules from the resource/domain payload with Module.concat/1, and AshAdmin.Components.Resource.Show's calculate converted every submitted form key with String.to_atom/1. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted resource/domain against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned.
This issue affects ash_admin: from 0.1.0 before 1.3.1.
Weakness: CWE-770
Which versions are affected by CVE-2026-82722?
1 open source package ship an affected version, including ash_admin.
| Package | Affected | Fixed in |
|---|---|---|
ash_admin Hex | From 0.1.0 | 1.3.1 |
How do I fix CVE-2026-82722?
Upgrade ash_admin to 1.3.1 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-82722 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82722 exists.
Sources
Also known as EEF-CVE-2026-82722, GHSA-wcr6-9rrw-5jhv.