CVE-2024-40643: Joplin has a parsing error leading to Cross-site Scripting (XSS)
Vulnerability summary
CVE-2024-40643 is a critical (CVSS 9.7) Cross-site Scripting vulnerability in joplin_project joplin. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 55.8% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 09-09-2024PublishedVulnerability first disclosed.
- 09-09-2024Last modifiedVulnerability information updated.
Description
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 within a tag.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.6CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.79%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.79% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundJoplin
Maturity: poc
Weaknesses
CWE · root causeAffected systems
2 vendors · 2 products
References
2 links- github.com/laurent22/joplin/security/advisories/GHSA-g796-3g6g-jmmcX Refsource CONFIRMExploitVendor Advisory