What’s Vulnerable › Vulnerabilities

CVE-2022-40276

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-11-03 · updated 2026-06-17
• Weakness: CWE-20

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.

Affected products

• Zettlr: 2.3.0

References

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

Get alerted when CVE-2022-40276 or the next vulnerability affects your stack