CVE-2021-39248 Cross-site scripting in n/a
Attackers can execute arbitrary scripts in user browsers via crafted LaTeX content in Open edX discussions, potentially leading to session hijacking.
- 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-2021-39248?
CVE-2021-39248 is a medium-severity cross-site scripting vulnerability in n/a, published on 17 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
Open edX through Lilac.1 allows XSS in common/static/common/js/discussion/utils.js via crafted LaTeX content within a discussion.
Weakness: CWE-79
Which versions are affected by CVE-2021-39248?
It affects 1 product.
Products include Edx Edx-Platform.
How do I fix CVE-2021-39248?
No fix has been published for CVE-2021-39248 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-2021-39248 being exploited?
There is no known exploitation of CVE-2021-39248 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cxfc-hq29-wmm6.