CVE-2021-29271 Cross-site scripting in n/a
An attacker can inject malicious scripts into comments in remark42, potentially executing code in other users' browsers.
- 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-2021-29271?
CVE-2021-29271 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 Mar 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
remark42 before 1.6.1 allows XSS, as demonstrated by "Locator: Locator{URL:" followed by an XSS payload. This is related to backend/app/store/comment.go and backend/app/store/service/service.go.
Weakness: CWE-79
Which versions are affected by CVE-2021-29271?
It affects 1 product.
Products include Remark42 Remark42.
How do I fix CVE-2021-29271?
No fix has been published for CVE-2021-29271 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-2021-29271 being exploited?
There is no known exploitation of CVE-2021-29271 in the wild and no public exploit code.