CVE-2026-5253 bufanyun HotGo editNotice Endpoint MessageList.vue cross site scripting
Remote attackers can execute cross-site scripting via the editNotice endpoint in HotGo, 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-2026-5253?
CVE-2026-5253 is a medium-severity cross-site scripting vulnerability in bufanyun HotGo, published on 1 Apr 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 weakness has been identified in bufanyun HotGo 1.0/2.0. Affected by this vulnerability is an unknown functionality of the file /web/src/layout/components/Header/MessageList.vue of the component editNotice Endpoint. Executing a manipulation can lead to cross site scripting. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-5253?
How do I fix CVE-2026-5253?
No fix has been published for CVE-2026-5253 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-2026-5253 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5253 exists.
Sources
Also known as GHSA-vh7h-cc8j-x655.