CVE-2021-20673 Cross-site scripting in GROWI (v4.2 Series)
Authenticated attackers can inject arbitrary scripts into the GROWI admin page, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-20673?
CVE-2021-20673 is a medium-severity cross-site scripting vulnerability in WESEEK, Inc. GROWI (v4.2 Series), published on 10 Mar 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Stored cross-site scripting vulnerability in Admin Page of GROWI (v4.2 Series) versions from v4.2.0 to v4.2.7 allows remote authenticated attackers to inject an arbitrary script via unspecified vectors.
Weakness: CWE-79
Which versions are affected by CVE-2021-20673?
It affects 1 product.
Products include Weseek Growi.
How do I fix CVE-2021-20673?
No fix has been published for CVE-2021-20673 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-2021-20673 being exploited?
There is no known exploitation of CVE-2021-20673 in the wild and no public exploit code.
Other vulnerabilities in WESEEK, Inc. GROWI (v4.2 Series)
Sources
Also known as GHSA-m48w-5q6f-f285.