How severe is CVE-2022-40277?

CVE-2022-40277 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-40277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40277?

CVE-2022-40277 affects Joplinapp Joplin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-40277?

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.

When was CVE-2022-40277 published?

CVE-2022-40277 was published on 2022-09-30 and last updated on 2026-06-17.

CVE-2022-40277

CVE-2022-40277 is a high-severity vulnerability in Joplinapp Joplin with a CVSS 3.x base score of 7.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Joplinapp Joplin
Published: 2022-09-30
Last modified: 2026-06-17

Description

Joplin version 2.8.8 allows an external attacker to execute arbitrary commands remotely on any client that opens a link in a malicious markdown file, via Joplin. This is possible because the application does not properly validate the schema/protocol of existing links in the markdown file before passing them to the 'shell.openExternal' function.

Frequently asked questions

What is CVE-2022-40277?: Joplin version 2.8.8 allows an external attacker to execute arbitrary commands remotely on any client that opens a link in a malicious markdown file, via Joplin. This is possible because the application does not properly validate the schema/protocol of existing links in the markdown file before passing them to the 'shell.openExternal' function.
How severe is CVE-2022-40277?: CVE-2022-40277 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-40277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-40277?: CVE-2022-40277 affects Joplinapp Joplin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-40277?: 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.
When was CVE-2022-40277 published?: CVE-2022-40277 was published on 2022-09-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:joplinapp:joplin:2.8.8:*:*:*:*:*:*:*

More vulnerabilities in Joplinapp Joplin

CVE-2022-35131 — Critical (CVSS 9.0): Joplin v2.8.8 allows attackers to execute arbitrary commands via a crafted payload injected into the Node titles.
CVE-2026-22810 — High (CVSS 8.2): Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Versions…
CVE-2021-23431 — Medium (CVSS 5.4): The package joplin before 2.3.2 are vulnerable to Cross-site Request Forgery (CSRF) due to missing CSRF checks in…

All CVEs affecting Joplinapp Joplin →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →