CVE-2020-18748 Cross-site scripting in n/a
Attackers can execute arbitrary code in Typora via malicious mathjax syntax in formula blocks due to a configuration error.
- 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-2020-18748?
CVE-2020-18748 is a medium-severity cross-site scripting vulnerability in n/a, published on 19 Aug 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 allows attackers to execute arbitrary code via mathjax syntax due to a mathjax configuration error in the mathematical formula blocks. This is a different vulnerability from CVE-2020-18221.
Weakness: CWE-79
Which versions are affected by CVE-2020-18748?
It affects 1 product.
Products include Typora Typora.
How do I fix CVE-2020-18748?
No fix has been published for CVE-2020-18748 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-2020-18748 being exploited?
There is no known exploitation of CVE-2020-18748 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-3ppf-x2gr-8g6c.