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CVE-2026-78038— Job argument injection via :args overrides primary_key and tenant in AshOban

Quick assessment

Affected
ash-project ash_oban
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ash-project 中的 存在一个未正确控制的动态确定对象属性修改漏洞。该漏洞允许那些输入会传递至 的 选项的用户，将更新或销毁触发器重新指向另一条记录，甚至可能跨越租户。 会构建带有原子键（ 、 、 ）的受信任任务参数，并将调用方的 合并到下方，因此在发生键冲突时，受信任的值会优先保留。然而，由于 Oban 任务参数会通过 JSON 进行往返传输，调用方的键到达时已变为字符串形式，因此 不会检测到冲突，导致两种键都得以保留。当任务被持久化时，JSON 对象会进行去重处理，保留最后一个（字符串形式的）键，最终工

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-78038

Vulnerability Information
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Vulnerability Title
Job argument injection via :args overrides primary_key and tenant in AshOban
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ash-project ash_oban 0.2.5 ~ 0.8.14 cpe:2.3:a:ash-project:ash_oban:*:*:*:*:*:*:*:*
ash-project ash_oban ce079229ecdf0d323da2b554f30fc569e54660f0 ~ da2d81e1e8e1dcc3e6ec8587cdb4f273575ffca3 cpe:2.3:a:ash-project:ash_oban:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-78038

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III. Intelligence Information for CVE-2026-78038

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Patches & Fixes for CVE-2026-78038 (1)

Vendor Advisories for CVE-2026-78038 (2)

Other References for CVE-2026-78038 (1)

Same Patch Batch · ash-project · 2026-08-30 · 11 CVEs total

CVE-2026-75847 5.9 MEDIUM Sensitive attribute values stored in a non-sensitive public changes map in AshPaperTrail
CVE-2026-77970 5.9 MEDIUM Sensitive fields nested in embedded values are not redacted in AshPaperTrail versions
CVE-2026-78228 5.9 MEDIUM Unbounded handle_error recursion enables denial of service in AshOban triggers
CVE-2026-77454 5.9 MEDIUM exists/2 predicate silently dropped on limited relationships with a parent() filter in Ash
CVE-2026-77831 2.1 LOW Algorithmic-complexity denial of service in AshPaperTrail full-diff list tracking
CVE-2026-77846 2.1 LOW JSON path injection via unescaped get_path segments in AshSqlite
CVE-2026-81318 2.1 LOW Distinct-query aggregate drops the tenant schema prefix, leaking across tenants in AshSql
CVE-2026-78691 2.1 LOW Unescaped backslash allows LIKE wildcard injection in AshSql string search
CVE-2026-80227 2.1 LOW SQL string_trim removes only spaces, diverging from in-memory trimming in AshSql
CVE-2026-81316 2.1 LOW Same-named aggregates with differing filters are conflated in AshSql

IV. Related Vulnerabilities

Same product: ash_oban
Same vendor: ash-project
Same weakness: CWE-915

V. Comments for CVE-2026-78038

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