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CVE-2026-85990— Leantime: Any Authenticated User Can Self-Escalate to Admin via Unauthorized JSON-RPC Methods

Quick assessment

Affected
Leantime leantime
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.

Leantime 是一个开源的项目管理系统。在 3.10.0 版本之前，对于临时归类的账号创建和插件管理功能区域，Leantime 的 JSON-RPC 分发器（位于 app/Domain/Api/Controllers/Jsonrpc.php）会公开暴露 API 服务方法，而 PermissionEnforcer::enforce 逻辑允许那些未标注 RequiresPermission 属性的方法被调用。具有普通浏览器会话的低权限已认证用户，只需发送必要的 X-Requested-With: XMLHttpRe

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
Leantime leantime < 3.10.0 affected
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I. Basic Information for CVE-2026-85990

Vulnerability Information
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Vulnerability Title
Leantime: Any Authenticated User Can Self-Escalate to Admin via Unauthorized JSON-RPC Methods
Source: CVE Program / CVE List V5
Vulnerability Description
Leantime is an open source project management system. Prior to 3.10.0, for the provisionally grouped account-creation and plugin-management surfaces, Leantime's JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php exposes public API service methods, while PermissionEnforcer::enforce allows methods that lack a RequiresPermission attribute. A low-privilege authenticated user with an ordinary browser session can send the required X-Requested-With: XMLHttpRequest header and call leantime.rpc.api.api.createApiKeyWithProjects, which reaches Api::createApiKeyWithProjects, with an attacker-chosen role to create an interactive administrator account. The same missing per-method authorization exposes Plugins::installPlugin, Plugins::enablePlugin, Plugins::disablePlugin, and Plugins::removePlugin to ordinary authenticated users, permitting unauthorized plugin management. The complete provisionally grouped issue is fixed in version 3.10.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Leantime leantime < 3.10.0 -

II. Public POCs for CVE-2026-85990

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III. Intelligence Information for CVE-2026-85990

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Patches & Fixes for CVE-2026-85990 (3)

Vendor Pages for CVE-2026-85990 (1)

IV. Related Vulnerabilities

Same product: leantime
Same vendor: Leantime
Same weakness: CWE-269

V. Comments for CVE-2026-85990

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