CVE-2026-82722
AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node DoS)
- State
- Published
- Severity
- 8.3 High
- Published
- Aug 31, 2026
- Updated
- Aug 31, 2026
- Reserved
- Aug 31, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.3 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H | EEF |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
ash_adminash-project |
|
ash_adminash-project |
|
References
- https://github.com/ash-project/ash_admin/security/advisories/GHSA-wcr6-9rrw-5jhvvendor-advisoryrelated
- https://cna.erlef.org/cves/CVE-2026-82722.htmlrelated
- https://osv.dev/vulnerability/EEF-CVE-2026-82722related
- https://github.com/ash-project/ash_admin/commit/731dffa09416d68f4ad3a0b6ee146b285ca0083bpatch
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