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CVE-2024-40643

27
FAUCET Score

CVE-2024-40643 is a critical cross-site scripting (XSS) vulnerability affecting Joplin, a popular open-source note-taking application. The flaw stems from improper handling of HTML tags, allowing an attacker to inject malicious code by using an "illegal" tag within a legitimate one. With a CVSS score of 9.6, this vulnerability poses a significant risk, enabling remote attackers to achieve high impact on confidentiality, integrity, and availability with low attack complexity. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.15CPE matchmatch criteria
cpe:2.3:a:joplin_project:joplin:*:*:*:*:*:-:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0075 is in the 58th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / laurent22/joplin/commit/b220413a9b5ed55fb1f565ac786a5c231da8bc87
Patch
github.com / laurent22/joplin/security/advisories/GHSA-g796-3g6g-jmmc
ExploitVendor Advisory