Description
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.
Published: 2026-08-30
Score: 5.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Sun, 30 Aug 2026 12:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Job argument injection via :args overrides primary_key and tenant in AshOban
First Time appeared Ash-project
Ash-project ash Oban
Weaknesses CWE-915
CPEs cpe:2.3:a:ash-project:ash_oban:*:*:*:*:*:*:*:*
Vendors & Products Ash-project
Ash-project ash Oban
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Ash-project Ash Oban
cve-icon MITRE

Status: PUBLISHED

Assigner: EEF

Published:

Updated: 2026-08-30T11:50:21.136Z

Reserved: 2026-08-28T19:30:02.318Z

Link: CVE-2026-78038

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-30T12:17:18.157

Modified: 2026-08-30T12:17:18.157

Link: CVE-2026-78038

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-30T13:30:05Z

Weaknesses
  • CWE-915

    Improperly Controlled Modification of Dynamically-Determined Object Attributes