CVE-2025-66902 Information disclosure in n/a
A remote attacker can obtain sensitive information or cause unexpected server behavior in the Pithikos websocket-server library due to an input validation issue.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66902?
CVE-2025-66902 is a high-severity vulnerability in n/a, published on 20 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An input validation issue in in Pithikos websocket-server v.0.6.4 allows a remote attacker to obtain sensitive information or cause unexpected server behavior via the websocket_server/websocket_server.py, WebSocketServer._message_received components.
Weakness: CWE-20
Which versions are affected by CVE-2025-66902?
It affects 1 product.
Products include Pithikos Websocket Server.
How do I fix CVE-2025-66902?
No fix has been published for CVE-2025-66902 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66902 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66902 exists.
Sources
Also known as GHSA-g299-249v-2v42.