CVE-2026-67585
Description
Allocation of Resources Without Limits or Throttling vulnerability in DivvyPayHQ absinthe_federation allows an unauthenticated remote attacker to abort the Erlang VM via crafted _entities representation keys. Every key of every object in the representations argument of the federation-mandated _entities field is converted with String.to_atom/1 by convert_key/2 in lib/absinthe/federation/schema/entities_field.ex. representations is typed as the open-ended _Any scalar, so its keys bypass schema coercion and the attacker names them freely. Atoms are never garbage collected and the BEAM atom table is hard-capped (about 1,048,576 entries by default), so one request carrying tens of thousands of unique keys creates that many permanent atoms and a handful of such requests exhausts the table and aborts the node. The impact is confined to availability: no data is read or altered, and recovery requires restarting the application. This issue affects absinthe_federation: from 0.1.0 before 0.9.3.
How to fix
- divvypayhq absinthe_federation0.9.3, c3838cda2a7f65c4893291668c223b0d6acf4516 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| divvypayhq absinthe_federation | 0.1.0 ≤ v < 0.9.3, 640a234a26b2d6fe5d9d21e00e5f4fce5645c0bf ≤ v < c3838cda2a7f65c4893291668c223b0d6acf4516 | 0.9.3, c3838cda2a7f65c4893291668c223b0d6acf4516 |
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