VULNERABILITY INTELLIGENCE

CVE-2022-40276

CVSS score5.5 MEDIUM

EPSS probability0.39%

CISA KEVNot currently listed

Published2022-11-03

Last modified2026-06-17

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

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.

Weakness classification

nvd@nist.gov: CWE-20
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-20

Primary references

help@fluidattacks.com — Exploit, Third Party Advisory
help@fluidattacks.com — Product, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Product, Third Party Advisory