CVE-2025-11945 toeverything AFFiNE Avatar Upload Image Endpoint cross site scripting
Remote attackers can execute arbitrary scripts via the Avatar Upload Image Endpoint in AFFiNE, potentially compromising user sessions.
- 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-2025-11945?
CVE-2025-11945 is a medium-severity cross-site scripting vulnerability in toeverything AFFiNE, published on 19 Oct 2025. 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 identified in toeverything AFFiNE up to 0.24.1. This vulnerability affects unknown code of the component Avatar Upload Image Endpoint. Such manipulation leads to cross site scripting. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-11945?
How do I fix CVE-2025-11945?
No fix has been published for CVE-2025-11945 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-2025-11945 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11945 exists.
Sources
Also known as GHSA-986g-8crq-6x83.