CVE-2020-18221 Cross-site scripting in n/a
Remote attackers can execute arbitrary code via XSS in Typora by injecting commands during mathematical formula rendering.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-18221?
CVE-2020-18221 is a medium-severity cross-site scripting vulnerability in n/a, published on 26 May 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cross Site Scripting (XSS) in Typora v0.9.65 and earlier allows remote attackers to execute arbitrary code by injecting commands during block rendering of a mathematical formula.
Weakness: CWE-79
Which versions are affected by CVE-2020-18221?
It affects 1 product.
Products include Typora Typora.
How do I fix CVE-2020-18221?
No fix has been published for CVE-2020-18221 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-18221 being exploited?
There is no known exploitation of CVE-2020-18221 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-2qh5-69gm-xwrw.