CVE-2025-27155: Matrix-Org Pinecone

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Pinecone is an experimental overlay routing protocol suite which is the foundation of the current P2P Matrix demos. The Pinecone Simulator (pineconesim) included in Pinecone up to commit ea4c337 is vulnerable to stored cross-site scripting. The payload storage is not permanent and will be wiped when restarting pineconesim.

Affected products

• Matrix-Org Pinecone: before 218b2801995b174085cb1c8fafe2d3aa661f85bd (fixed in 218b2801995b174085cb1c8fafe2d3aa661f85bd)

Published 2025-03-04. Last modified 2026-06-17.