CVE-2026-78038

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in ash-project ash_oban allows a user whose input reaches the :args option of AshOban.build_trigger/3 to retarget an update or destroy trigger at another record, including across tenants. build_trigger/3 builds the trusted job arguments with atom keys (:primary_key, :tenant, :action_arguments) and merges the caller's :args underneath so the trusted values win on collision. Because Oban job arguments round-trip through JSON, the caller's keys arrive as strings, so Map.merge sees no collision and both keys survive. When the job is persisted the JSON object is de-duplicated keeping the last (string) key, and the worker reads the caller's value. The documentation describes :args as unable to affect the action, so an application that forwards user input into it for uniqueness scoping is exposed to authorization bypass and tenant isolation breaks. This issue affects ash_oban: from 0.2.5 before 0.8.14.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-78038.html
https://github.com/ash-project/ash_oban/commit/da2d81e1e8e1dcc3e6ec8587cdb4f273575ffca3
https://github.com/ash-project/ash_oban/security/advisories/GHSA-gj9p-x393-rf9h
https://osv.dev/vulnerability/EEF-CVE-2026-78038
https://github.com/ash-project/ash_oban/security/advisories/GHSA-gj9p-x393-rf9h

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-30 12:17

Updated : 2026-09-01 21:15

NVD link : CVE-2026-78038

Mitre link : CVE-2026-78038

CVE.ORG link : CVE-2026-78038

JSON object : View

Products Affected

No product.

CWE

CWE-915

Improperly Controlled Modification of Dynamically-Determined Object Attributes

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