CVE-2021-20848 Cross-site Scripting in github.com/schollz/rwtxt
A remote attacker can inject arbitrary scripts into rwtxt, potentially leading to code execution or account takeover.
- 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
- Available
What is CVE-2021-20848?
CVE-2021-20848 is a medium-severity cross-site scripting vulnerability in Zack Scholl rwtxt, published on 24 Nov 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 vulnerability in rwtxt versions prior to v1.8.6 allows a remote attacker to inject an arbitrary script via unspecified vectors.
Weakness: CWE-79
Which versions are affected by CVE-2021-20848?
3 open source packages ship an affected version, including github.com/schollz/rwtxt. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/schollz/rwtxt Go | All versions | 1.8.6 |
github.com/schollz/rwtxt Go | All versions | 1.8.6 |
github.com/schollz/rwtxt Go | All versions | 1.8.6 |
Products include Rwtxt Project Rwtxt.
How do I fix CVE-2021-20848?
Upgrade github.com/schollz/rwtxt to 1.8.6 or later.
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-2021-20848 being exploited?
There is no known exploitation of CVE-2021-20848 in the wild and no public exploit code.
Sources
Also known as GHSA-458f-26r3-x2c3, GO-2022-0231.