How severe is CVE-2024-40643?

CVE-2024-40643 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-40643 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40643?

CVE-2024-40643 affects Joplin Project Joplin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40643?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-40643 have an EU (EUVD) identifier?

Yes. CVE-2024-40643 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38554.

When was CVE-2024-40643 published?

CVE-2024-40643 was published on 2024-09-09 and last updated on 2026-06-17.

CVE-2024-40643

CVE-2024-40643 is a critical-severity vulnerability in Joplin Project Joplin with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38554
Weakness: CWE-79
Affected product: Joplin Project Joplin
Published: 2024-09-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 within a tag.
How severe is CVE-2024-40643?: CVE-2024-40643 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-40643 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40643?: CVE-2024-40643 affects Joplin Project Joplin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40643?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-40643 have an EU (EUVD) identifier?: Yes. CVE-2024-40643 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38554.
When was CVE-2024-40643 published?: CVE-2024-40643 was published on 2024-09-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:joplin_project:joplin:*:*:*:*:*:-:*:*

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