How severe is CVE-2021-37916?

CVE-2021-37916 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-37916 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-2021-37916?

CVE-2021-37916 affects Joplin Project Joplin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37916?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37916 published?

CVE-2021-37916 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-37916

CVE-2021-37916 is a medium-severity vulnerability in Joplin Project Joplin with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Joplin Project Joplin
Published: 2021-08-03
Last modified: 2026-06-17

Description

Joplin before 2.0.9 allows XSS via button and form in the note body.

Frequently asked questions

What is CVE-2021-37916?: Joplin before 2.0.9 allows XSS via button and form in the note body.
How severe is CVE-2021-37916?: CVE-2021-37916 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-37916 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-2021-37916?: CVE-2021-37916 affects Joplin Project Joplin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37916?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37916 published?: CVE-2021-37916 was published on 2021-08-03 and last updated on 2026-06-17.

References

Affected products (1)

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

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