CVE-2026-67585
Atom Exhaustion via _entities Representation Keys in DivvyPayHQ absinthe_federation
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.
INFO
Published Date :
Aug. 7, 2026, 5:17 p.m.
Last Modified :
Oct. 24, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 6b3ad84c-e1a6-4bf7-a703-f496b71e49db | ||||
| CVSS 4.0 | HIGH | 6b3ad84c-e1a6-4bf7-a703-f496b71e49db |
Solution
- Update absinthe_federation to version 0.9.3.
- Apply vendor patches if available.
- Monitor atom table usage.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-67585.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-67585 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-67585
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-67585 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-67585 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: absinthe_federation de DivvyPayHQ, Description: Vulnerabilidad de Asignación de Recursos Sin Límites o Limitación en DivvyPayHQ absinthe_federation permite a un atacante remoto no autenticado abortar la VM de Erlang mediante claves de representación _entities manipuladas. Cada clave de cada objeto en el argumento representations del campo _entities exigido por la federación se convierte con String.to_atom/1 por convert_key/2 en lib/absinthe/federation/schema/entities_field.ex. representations se tipifica como el escalar _Any de tipo abierto, por lo que sus claves eluden la coerción del esquema y el atacante las nombra libremente. Los átomos nunca son recolectados por el recolector de basura y la tabla de átomos de BEAM tiene un límite estricto (aproximadamente 1,048,576 entradas por defecto), por lo que una solicitud que contenga decenas de miles de claves únicas crea esa cantidad de átomos permanentes y un puñado de tales solicitudes agota la tabla y aborta el nodo. El impacto se limita a la disponibilidad: no se leen ni se alteran datos, y la recuperación requiere reiniciar la aplicación. Este problema afecta a absinthe_federation: desde 0.1.0 antes de 0.9.3. Title: absinthe_federation de DivvyPayHQ, Description: Vulnerabilidad de Asignación de Recursos Sin Límites o Limitación en DivvyPayHQ absinthe_federation permite a un atacante remoto no autenticado abortar la VM de Erlang mediante claves de representación _entities manipuladas. Cada clave de cada objeto en el argumento representations del campo _entities exigido por la federación se convierte con String.to_atom/1 por convert_key/2 en lib/absinthe/federation/schema/entities_field.ex. representations se tipifica como el escalar _Any de tipo abierto, por lo que sus claves eluden la coerción del esquema y el atacante las nombra libremente. Los átomos nunca son recolectados por el recolector de basura y la tabla de átomos de BEAM tiene un límite estricto (aproximadamente 1,048,576 entradas por defecto), por lo que una solicitud que contenga decenas de miles de claves únicas crea esa cantidad de átomos permanentes y un puñado de tales solicitudes agota la tabla y aborta el nodo. El impacto se limita a la disponibilidad: no se leen ni se alteran datos, y la recuperación requiere reiniciar la aplicación. Este problema afecta a absinthe_federation: desde 0.1.0 antes de 0.9.3. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: absinthe_federation de DivvyPayHQ, Description: Vulnerabilidad de Asignación de Recursos Sin Límites o Limitación en DivvyPayHQ absinthe_federation permite a un atacante remoto no autenticado abortar la VM de Erlang mediante claves de representación _entities manipuladas. Cada clave de cada objeto en el argumento representations del campo _entities exigido por la federación se convierte con String.to_atom/1 por convert_key/2 en lib/absinthe/federation/schema/entities_field.ex. representations se tipifica como el escalar _Any de tipo abierto, por lo que sus claves eluden la coerción del esquema y el atacante las nombra libremente. Los átomos nunca son recolectados por el recolector de basura y la tabla de átomos de BEAM tiene un límite estricto (aproximadamente 1,048,576 entradas por defecto), por lo que una solicitud que contenga decenas de miles de claves únicas crea esa cantidad de átomos permanentes y un puñado de tales solicitudes agota la tabla y aborta el nodo. El impacto se limita a la disponibilidad: no se leen ni se alteran datos, y la recuperación requiere reiniciar la aplicación. Este problema afecta a absinthe_federation: desde 0.1.0 antes de 0.9.3. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 07, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-67585', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-07T18:12:41.815038Z'} -
New CVE Received by 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Aug. 07, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*'], 'repo': 'https://github.com/DivvyPayHQ/absinthe_federation', 'vendor': 'DivvyPayHQ', 'modules': ["'Elixir.Absinthe.Federation.Schema.EntitiesField'"], 'product': 'absinthe_federation', 'versions': [{'status': 'affected', 'version': '0.1.0', 'lessThan': '0.9.3', 'versionType': 'semver'}], 'packageURL': 'pkg:hex/absinthe_federation', 'packageName': 'absinthe_federation', 'programFiles': ['lib/absinthe/federation/schema/entities_field.ex'], 'collectionURL': 'https://repo.hex.pm', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': "'Elixir.Absinthe.Federation.Schema.EntitiesField':resolver/3"}, {'name': "'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_keys_to_atom/2"}, {'name': "'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_key/2"}]}, {'cpes': ['cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*'], 'repo': 'https://github.com/DivvyPayHQ/absinthe_federation', 'vendor': 'DivvyPayHQ', 'modules': ["'Elixir.Absinthe.Federation.Schema.EntitiesField'"], 'product': 'absinthe_federation', 'versions': [{'status': 'affected', 'version': '640a234a26b2d6fe5d9d21e00e5f4fce5645c0bf', 'lessThan': 'c3838cda2a7f65c4893291668c223b0d6acf4516', 'versionType': 'git'}], 'packageURL': 'pkg:github/DivvyPayHQ/absinthe_federation', 'packageName': 'DivvyPayHQ/absinthe_federation', 'programFiles': ['lib/absinthe/federation/schema/entities_field.ex'], 'collectionURL': 'https://github.com', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': "'Elixir.Absinthe.Federation.Schema.EntitiesField':resolver/3"}, {'name': "'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_keys_to_atom/2"}, {'name': "'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_key/2"}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-770 Added Reference https://cna.erlef.org/cves/CVE-2026-67585.html Added Reference https://github.com/DivvyPayHQ/absinthe_federation/commit/c3838cda2a7f65c4893291668c223b0d6acf4516 Added Reference https://github.com/DivvyPayHQ/absinthe_federation/security/advisories/GHSA-55hv-mwvr-phf3 Added Reference https://osv.dev/vulnerability/EEF-CVE-2026-67585