Platform
other
Component
joplin
Fixed in
3.0.16
CVE-2024-40643 describes a Cross-Site Scripting (XSS) vulnerability affecting Joplin, a free and open-source note-taking application. This flaw allows attackers to inject malicious scripts into Joplin notes, potentially leading to account compromise and data theft. The vulnerability impacts versions of Joplin up to and including 3.0.15, and a fix is available in version 3.0.15.
The XSS vulnerability in Joplin arises from the application's failure to properly sanitize HTML tags where a "<" character is followed by a non-letter character. This allows attackers to craft malicious HTML payloads that, when rendered within Joplin, execute arbitrary JavaScript code in the user's browser. A successful exploit could lead to the theft of sensitive information stored within Joplin notes, such as passwords, personal data, or confidential documents. Attackers could also potentially hijack user accounts or redirect users to malicious websites. The impact is particularly severe given Joplin's use as a central repository for personal and professional information.
CVE-2024-40643 was publicly disclosed on September 9, 2024. There is currently no indication of active exploitation campaigns targeting this vulnerability. The vulnerability is not listed on the CISA KEV catalog as of this writing. Public proof-of-concept (POC) code is likely to emerge given the ease of exploitation of XSS vulnerabilities.
Exploit Status
EPSS
0.56% (68% percentile)
CISA SSVC
CVSS Vector
The primary mitigation for CVE-2024-40643 is to immediately upgrade to Joplin version 3.0.15 or later. This version includes a fix that properly sanitizes HTML input, preventing the injection of malicious scripts. If upgrading is not immediately feasible, consider temporarily disabling HTML rendering within Joplin notes, although this will impact the application's functionality. Review Joplin notes for any suspicious content that may have been injected. There are no specific WAF or proxy rules that can directly address this vulnerability, as it resides within the application itself.
Update Joplin to version 3.0.15 or higher. This version contains a fix for the XSS vulnerability. You can download the latest version from the official Joplin website or through your operating system's package manager.
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CVE-2024-40643 is a critical XSS vulnerability in Joplin note-taking application, allowing attackers to inject malicious scripts. It affects versions up to 3.0.15.
Yes, if you are using Joplin version 3.0.15 or earlier, you are vulnerable to this XSS attack. Upgrade immediately.
Upgrade Joplin to version 3.0.15 or later to resolve the vulnerability. This update includes a fix for the improper HTML sanitization.
As of now, there is no confirmed evidence of active exploitation, but public POCs are likely to appear.
Refer to the Joplin security advisory on their official website or GitHub repository for detailed information and updates.
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