CVE-2022-21158

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-03-10 · updated 2026-06-17
Weakness: CWE-79

Description

A stored cross-site scripting vulnerability in marktext versions prior to v0.17.0 due to improper handling of the link (with javascript: scheme) inside the document may allow an attacker to execute an arbitrary script on the PC of the user using marktext.

Affected products

MarkText: before 0.17.0 — fixed in 0.17.0

How to fix

Upgrade to a fixed version: MarkText 0.17.0. Check the vendor advisory for mitigations.

References

https://github.com/marktext/marktext/releases/tag/v0.17.0
https://jvn.jp/en/jp/JVN89524240/index.html
https://github.com/marktext/marktext/releases/tag/v0.17.0
https://jvn.jp/en/jp/JVN89524240/index.html

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