What is CVE-2024-40643?

CVE-2024-40643 is a critical-severity vulnerability in Laurent22 Joplin, classified under Cross-site Scripting. CVSS score: 9.7/10. Published 2024-09-09.

How severe is CVE-2024-40643?

Critical severity. CVSS v3 base score is 9.7 out of 10.

Is CVE-2024-40643 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Laurent22 Joplin

CVE-2024-40643

Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that "<" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an "illegal" tag wit…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (68.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.7 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Laurent22 Joplin — versions < 3.0.15

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

https://github.com/laurent22/joplin/security/advisories/GHSA-g796-3g6g-jmmc (x_refsource_CONFIRM)
https://github.com/laurent22/joplin/commit/b220413a9b5ed55fb1f565ac786a5c231da8bc87 (x_refsource_MISC)

Frequently asked questions

What is CVE-2024-40643?: CVE-2024-40643 is a critical-severity vulnerability in Laurent22 Joplin, classified under Cross-site Scripting. CVSS score: 9.7/10. Published 2024-09-09.
How severe is CVE-2024-40643?: Critical severity. CVSS v3 base score is 9.7 out of 10.
Is CVE-2024-40643 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.