CVE-2022-40276

5.5 mediumEPSS 0.4%

Medium (5.5) in zettlr zettlr. EPSS 0.4% chance of exploitation in the next 30 days.

Zettlr version 2.3.0 allows an external attacker to remotely obtain arbitrary local files on any client that attempts to view a malicious markdown file through Zettlr. This is possible because the application does not have a CSP policy (or at least not strict enough) and/or does not properly validate the contents of markdown files before rendering them.

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2022-11-03
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

zettlr:zettlr

References

https://fluidattacks.com/advisories/avicii/
https://github.com/Zettlr/Zettlr
https://fluidattacks.com/advisories/avicii/
https://github.com/Zettlr/Zettlr

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