CVE-2021-26835

MEDIUM 6.1CVE-2021-26835 · Published 18/06/2021 · updated 17/06/2026

In short

CVE-2021-26835 is a MEDIUM (CVSS 6.1) vulnerability affecting zettlr (zettlr).
Chance of exploitation in the next 30 days (EPSS): 1.3%, higher than 70.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
zettlr zettlr	`= 1.8.7`	No fix yet

Description

No filtering of cross-site scripting (XSS) payloads in the markdown-editor in Zettlr 1.8.7 allows attackers to perform remote code execution via a crafted file.

References

Zettlr/Zettlr · Exploit
Zettlr/Zettlr release v1.8.9 · Release Notes

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