How severe is CVE-2026-22810?

CVE-2026-22810 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-22810 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22810?

CVE-2026-22810 primarily affects Joplinapp Joplin. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-22810?

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

Does CVE-2026-22810 have an EU (EUVD) identifier?

Yes. CVE-2026-22810 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30806.

When was CVE-2026-22810 published?

CVE-2026-22810 was published on 2026-05-18 and last updated on 2026-06-17.

CVE-2026-22810

CVE-2026-22810 is a high-severity vulnerability in Joplinapp Joplin with a CVSS 3.x base score of 8.2. 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-24.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30806
Weakness: CWE-24
Affected product: Joplinapp Joplin
Published: 2026-05-18
Last modified: 2026-06-17

Description

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk. The OneNote converter does not sanitize the names of embedded files before writing them to disk. As a result, it's possible for an attacker to create a malicious .one file that includes file names containing ../../, that are then interpreted as part of the target path when extracting attachments from the .one file. This issue has been patched in version 3.5.7.

Frequently asked questions

What is CVE-2026-22810?: Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk. The OneNote converter does not sanitize the names of embedded files before writing them to disk. As a result, it's possible for an attacker to create a malicious .one file that includes file names containing ../../, that are then interpreted as part of the target path when extracting attachments from the .one file. This issue has been patched in version 3.5.7.
How severe is CVE-2026-22810?: CVE-2026-22810 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-22810 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22810?: CVE-2026-22810 primarily affects Joplinapp Joplin. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-22810?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-22810 have an EU (EUVD) identifier?: Yes. CVE-2026-22810 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30806.
When was CVE-2026-22810 published?: CVE-2026-22810 was published on 2026-05-18 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:joplinapp:joplin:*:*:*:*:*:*:*:*
cpe:2.3:a:msiemens:one2html:*:*:*:*:*:rust:*:*

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