{"id":"CVE-2026-49450","published":"2026-09-21T21:17:03.747","lastModified":"2026-09-21T21:17:03.747","description":"Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Desktop for Windows omits publisherName from packages/app-desktop/package.json, so the generated app-update.yml causes NsisUpdater.verifySignature() to skip comparison of a downloaded update's Authenticode signer with Joplin's signer. An attacker who controls the update delivery path can replace the update metadata and installer, and the client accepts an installer signed by another publisher or left unsigned after the user approves installation. Successful exploitation runs attacker-controlled code with the user's privileges and can compromise notes, credentials, and local data. This issue is fixed in version 3.7.2.","cvssScore":7.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-345","CWE-353","CWE-494"],"vendors":[],"products":[],"references":[{"url":"https://github.com/laurent22/joplin/commit/853659edf575c4f526c2b196e0629462aee9df28","tags":[]},{"url":"https://github.com/laurent22/joplin/pull/15539","tags":[]},{"url":"https://github.com/laurent22/joplin/security/advisories/GHSA-9wp7-hr9m-3273","tags":[]}],"exploitRefs":[{"url":"https://github.com/laurent22/joplin/commit/853659edf575c4f526c2b196e0629462aee9df28","tags":[]},{"url":"https://github.com/laurent22/joplin/pull/15539","tags":[]},{"url":"https://github.com/laurent22/joplin/security/advisories/GHSA-9wp7-hr9m-3273","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows an attacker to replace update metadata and installers, leading to potential code execution with user privileges.","exploitability":"Exploitation requires control over the update delivery path but is considered feasible given the right conditions.","blast_radius":"If exploited, it could lead to data compromise including notes, credentials, and local data.","remediation":"Update to Joplin version 3.7.2 or later to mitigate the vulnerability.","tags":["rce","update","installer","auth-bypass"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-22T06:17:50.486Z"}}