CVE-2022-40276

MEDIUM

Zettlr 2.3.0 - Arbitrary Local File Disclosure via Malicious Markdown File

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Exploit, Third Party Advisory
https://fluidattacks.com/advisories/avicii/
Product, Third Party Advisory
https://github.com/Zettlr/Zettlr

Scores

CVSS v3 5.5
EPSS 0.0037
EPSS Percentile 28.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (1)
zettlr/zettlr 2.3.0
Published Nov 03, 2022
Tracked Since Feb 18, 2026