CVE Catalog

CVE-2026-34593

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.42%

35th percentile - higher than 35% of all known CVEs

Summary

Ash Framework before version 3.22.0 in Ash.Type.Module.cast_input/2 unconditionally creates a new Erlang atom via Module.concat([value]) for any user-supplied binary string starting with "Elixir.", without verifying whether the module exists. Erlang atoms are never garbage-collected and the BEAM atom table has a hard default limit of approximately 1,048,576 entries.

Risk Assessment

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, causing application downtime.

Recommendation

Immediately upgrade Ash Framework to version 3.22.0, which fixes this vulnerability.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS