CVE-2026-20711 Cross-site scripting in Cybozu Garoon
An XSS vulnerability in the email function allows attackers to reset arbitrary user passwords, leading to 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
- None listed
What is CVE-2026-20711?
CVE-2026-20711 is a medium-severity cross-site scripting vulnerability in Cybozu Garoon, published on 2 Feb 2026. 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 exists in E-mail function of Cybozu Garoon 5.0.0 to 6.0.3, which may allow an attacker to reset arbitrary users’ passwords.
Weakness: CWE-79
Which versions are affected by CVE-2026-20711?
It affects 1 product.
Products include Cybozu Garoon.
How do I fix CVE-2026-20711?
No fix has been published for CVE-2026-20711 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-2026-20711 being exploited?
There is no known exploitation of CVE-2026-20711 in the wild and no public exploit code.
Other vulnerabilities in Cybozu Garoon
Sources
Also known as GHSA-wpfv-crpp-p2xq.