CVE-2021-20672 Cross-site scripting in GROWI (v4.2 Series)
Remote attackers can inject arbitrary scripts via URL parameters in GROWI, potentially executing code in user sessions.
- 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-2021-20672?
CVE-2021-20672 is a medium-severity cross-site scripting vulnerability in WESEEK, Inc. GROWI (v4.2 Series), published on 10 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
Reflected cross-site scripting vulnerability due to insufficient verification of URL query parameters in GROWI (v4.2 Series) versions from v4.2.0 to v4.2.7 allows remote attackers to inject an arbitrary script via unspecified vectors.
Weakness: CWE-79
Which versions are affected by CVE-2021-20672?
It affects 1 product.
Products include Weseek Growi.
How do I fix CVE-2021-20672?
No fix has been published for CVE-2021-20672 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-2021-20672 being exploited?
There is no known exploitation of CVE-2021-20672 in the wild and no public exploit code.
Other vulnerabilities in WESEEK, Inc. GROWI (v4.2 Series)
Sources
Also known as GHSA-8333-hcp6-6575.