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CVE-2026-105783

8.0 · HIGH

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks.

Published Oct 6, 2026CWE-346EPSS 0.14%

Overview

CVE-2026-105783 is a high-severity vulnerability. It was published on October 6, 2026 and has a CVSS 3.1 base score of 8.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/laurent22/joplin/commit/27ae5c0d404ee47ad24862cce917dda6eb2930b7GitHubgithub.com/laurent22/joplin/pull/16276GitHubgithub.com/laurent22/joplin/releases/tag/v3.7.13GitHubgithub.com/laurent22/joplin/security/advisories/GHSA-9728-v7ww-mxjv

How CyberStrike helps

Frequently asked questions

What is CVE-2026-105783?

CVE-2026-105783 is a high-severity vulnerability. It was published on October 6, 2026 and has a CVSS 3.1 base score of 8.0 (HIGH).

How severe is CVE-2026-105783?

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-105783?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-105783?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-105783 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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