CVE-2026-105783

8 HIGHpublic exploit available

Published 2026-10-06 · Updated 2026-10-06

AI risk analysis

Summary: The flaw allows an arbitrary website to obtain a permanent API token by exploiting the Web Clipper server, granting full access to Joplin's data.
Exploitability: Exploitation is moderately hard as it requires the victim to approve a generic prompt, but preconditions include the Web Clipper server being enabled.
Blast radius: If exploited, the impact is high, as the attacker gains full access to notes, folders, tags, resources, and master keys.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to version 3.7.13 or later.

auth-bypasswebapinote-takingdesktop

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Weaknesses

CWE-346, CWE-352

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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