CVE-2026-48593— Unbounded range expansion in cron describe causes memory exhaustion in oban_web

Unbounded range expansion in cron describe causes memory exhaustion in oban_web

Uncontrolled Resource Consumption vulnerability in oban-bg oban_web ('Elixir.Oban.Web.CronExpr' modules) allows memory exhaustion via unbounded cron range expansion. An attacker with access to schedule cron jobs can submit a malicious cron expression such as "0 0 1-100000000 * *". When a user with dashboard access views the cron job list, 'Elixir.Oban.Web.CronExpr':describe/1 is called to render the expression. parse_range/1 parses both range endpoints via Integer.parse/1 with no bounds check, and the downstream helpers expand_dom_parts/1 and expand_dow_parts/1 materialise the range eagerly via Enum.to_list/1, causing allocation of ~2.4 GB and stalling or crashing the BEAM node. A sibling helper extract_dom_values already validates range bounds, but the expansion helpers do not. This issue affects oban_web: from 2.12.0 before 2.12.5.

N/A

未加控制的资源消耗(资源穷尽)

Oban Web 安全漏洞

Oban Web是Oban Framework开源的一个嵌入式实时后台任务监控仪表盘。 Oban Web 2.12.0版本至2.12.5之前版本存在安全漏洞，该漏洞源于Elixir.Oban.Web.CronExpr模块中cron范围扩展无限制，可能导致内存耗尽。

N/A

N/A