CVE-2026-7677 kerwincui FastBee System Notice SysNoticeController.java add cross site scripting
Remote attackers can inject malicious scripts via the System Notice content field in FastBee, potentially leading to code execution or account takeover.
- 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-2026-7677?
CVE-2026-7677 is a medium-severity cross-site scripting vulnerability in kerwincui FastBee, published on 3 May 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
A vulnerability was determined in kerwincui FastBee up to 1.2.1. The impacted element is the function Add of the file springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java of the component System Notice Handler. This manipulation of the argument noticeContent causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-7677?
How do I fix CVE-2026-7677?
No fix has been published for CVE-2026-7677 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-2026-7677 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7677 exists.
Sources
Also known as GHSA-4px6-mj2j-jp7w.