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CVE-2026-105783— Joplin Web Clipper pairing allows cross-origin theft of a permanent API token

Quick assessment

Affected
laurent22 joplin
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.

Joplin 是一款开源的笔记与待办事项应用，能够将笔记和列表组织到笔记本中。在版本 3.7.13 之前，当 Joplin 桌面版启用可选的“Web Clipper（网页剪藏）”服务器时，位于 packages/lib/ClipperServer.ts 中的服务器会返回 Access-Control-Allow-Origin: * 响应头，允许任意网站调用 POST /auth 和 GET /auth/check 接口。这是因为配对端点未拒绝来自 HTTP 或 HTTPS 协议的请求来源。 桌面端的确认对话框并未显

CVSS 8.0 · High
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I. Basic Information for CVE-2026-105783

Vulnerability Information
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Vulnerability Title
Joplin Web Clipper pairing allows cross-origin theft of a permanent API token
Source: CVE Program / CVE List V5
Vulnerability Description
Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, when Joplin Desktop is running with the opt-in Web Clipper server enabled, the server in packages/lib/ClipperServer.ts sends Access-Control-Allow-Origin: * and allows an arbitrary website to call POST /auth and GET /auth/check because the pairing endpoints do not reject HTTP or HTTPS origins. The desktop confirmation dialog does not identify the requesting origin, so a victim who approves the generic prompt authorizes the attacking page, which then receives the permanent API token. The token provides ongoing read and write access to notes, folders, tags, resources, and master keys. This issue is fixed in version 3.7.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
laurent22 joplin < 3.7.13 -

II. Public POCs for CVE-2026-105783

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III. Intelligence Information for CVE-2026-105783

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Other References for CVE-2026-105783 (4)

Same Patch Batch · laurent22 · 2026-10-05 · 4 CVEs total

CVE-2026-105786 8.5 HIGH Joplin: Unauthenticated account takeover via an attacker-chosen application-authorisation
CVE-2026-105785 4.8 MEDIUM Joplin Server password reset accepts tokens issued for unrelated purposes
CVE-2026-105784 4.6 MEDIUM Joplin whiteboard card rendering allows CSS injection into application chrome

IV. Related Vulnerabilities

Same product: joplin
Same vendor: laurent22
Same weakness: CWE-346

V. Comments for CVE-2026-105783

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