CVE-2026-57279 Cross-site scripting in Cybozu Garoon
An attacker can execute arbitrary scripts in the browser of a logged-in user via a cross-site scripting vulnerability in Cybozu Garoon.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-57279?
CVE-2026-57279 is a medium-severity cross-site scripting vulnerability in Cybozu, Inc Cybozu Garoon, published on 10 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Cybozu Garoon contains a cross-site scripting vulnerability. If this vulnerability is exploited, an arbitrary script may be executed in the web browser of a user logged in to the product.
Weakness: CWE-79
Which versions are affected by CVE-2026-57279?
How do I fix CVE-2026-57279?
No fix has been published for CVE-2026-57279 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-2026-57279 being exploited?
There is no known exploitation of CVE-2026-57279 in the wild and no public exploit code.
Sources
Also known as GHSA-52jw-w52q-hj2v.