🛡️ CVE-2022-40276
🟡 CVSS 5.5 — Medium ⚠️ Exploit Public CWE-20 NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE CWE-20
Public Exploit ⚠️ Yes
Source NVD
Published 2022-11-03
Updated 2026-06-08
Modified 2025-05-02
Fix URL N/A

Affected Packages

Software From version Fixed in
zettlr

References

Exploit, Third Party Advisory https://fluidattacks.com/advisories/avicii/
Product, Third Party Advisory https://github.com/Zettlr/Zettlr
Exploit, Third Party Advisory https://fluidattacks.com/advisories/avicii/
Product, Third Party Advisory https://github.com/Zettlr/Zettlr

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