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CVE-2026-78228— Unbounded handle_error recursion enables denial of service in AshOban triggers

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 ash_oban 存在不受控递归漏洞。若用户能够导致触发器（trigger）的 动作在最后一次尝试时失败，则可耗尽工作进程（worker）的 CPU 和内存，从而导致服务不可用（拒绝服务，DoS）。 详细机制： 生成的 worker 中的 处理器 会在任务的最后一次尝试时，在 块中执行触发器的 动作。如果该动作本身抛出异常， 会再次以相同任务进行递归调用。由于任务的尝试次数仍等于 ，程序会重新进入相同的代码分支并重新执行失败的动作，且没有退出机制。 任何确定性的 失败（如数据层故障、动

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1 AI

T1027 · Obfuscated Files or Information
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I. Basic Information for CVE-2026-78228

Vulnerability Information
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Vulnerability Title
Unbounded handle_error recursion enables denial of service in AshOban triggers
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled Recursion vulnerability in ash-project ash_oban allows a user who can drive a trigger's on_error action to fail on the final attempt to exhaust worker CPU and memory, denying service. The generated worker's atomic handle_error/4 runs the trigger's on_error action on a job's final attempt inside a rescue that, when the action itself raises, calls handle_error/4 again with the same job. The job's attempt still equals max_attempts, so it re-enters the same clause and re-runs the failing action, with no exit. Any deterministic on_error failure (a data-layer outage, a misconfigured action, or a record the action rejects) loops forever; because the recursive call is not in tail position, each iteration retains a formatted stacktrace and the process heap grows without bound while the failing statement is re-issued against the data layer until the runtime kills the worker. This issue affects ash_oban: from 0.8.0-rc.1 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:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ash-project ash_oban 0.8.0-rc.1 ~ 0.8.14 cpe:2.3:a:ash-project:ash_oban:*:*:*:*:*:*:*:*
ash-project ash_oban 5d117ed2006df7277561c69dbfd39281da6ace9f ~ 851cd0e76ed882bf736fc48d10f96d037e26b5f0 cpe:2.3:a:ash-project:ash_oban:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-78228

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III. Intelligence Information for CVE-2026-78228

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Other References for CVE-2026-78228 (4)

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-2026-78038 5.9 MEDIUM Job argument injection via :args overrides primary_key and tenant in AshOban
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-674

V. Comments for CVE-2026-78228

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