CVE-2026-34593

Ash Framework is a declarative, extensible framework for building Elixir applications. Prior to version 3.22.0, Ash.Type.Module.cast_input/2 unconditionally creates a new Erlang atom via Module.concat([value]) for any user-supplied binary string that starts with "Elixir.", before verifying whether the referenced module exists. Because Erlang atoms are never garbage-collected and the BEAM atom table has a hard default limit of approximately 1,048,576 entries, an attacker who can submit values to any resource attribute or argument of type :module can exhaust this table and crash the entire BEAM VM, taking down the application. This issue has been patched in version 3.22.0.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ash-project/ash/releases/tag/v3.22.0	Product Release Notes
https://github.com/ash-project/ash/security/advisories/GHSA-jjf9-w5vj-r6vp	Exploit Vendor Advisory
https://github.com/ash-project/ash/security/advisories/GHSA-jjf9-w5vj-r6vp	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ash-hq:ash_framework:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-02 18:16

Updated : 2026-07-24 21:10

NVD link : CVE-2026-34593

Mitre link : CVE-2026-34593

CVE.ORG link : CVE-2026-34593

JSON object : View

Products Affected

ash-hq

ash_framework

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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