CVE-2025-30355

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed in Synapse v1.127.1. No known workarounds are available.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Mar 27, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

Related CVEs from 2025

CVE-2025-303569.8CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure comm CVE-2025-303576.8NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, if a malicious user is leav CVE-2025-303588.1Mesop is a Python-based UI framework that allows users to build web applications. A class pollution vulnerability in Mesop prior to version CVE-2025-303595.9webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-s CVE-2025-30366.1A vulnerability, which was classified as problematic, was found in yzk2356911358 StudentServlet-JSP cc0cdce25fbe43b6c58b60a77a2c85f52d2102f5 CVE-2025-303606.5webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-s CVE-2025-303619.8WeGIA is a Web manager for charitable institutions. A security vulnerability was identified in versions prior to 3.2.6, where it is possible CVE-2025-303625.4WeGIA is a Web manager for charitable institutions. A stored Cross-Site Scripting (XSS) vulnerability was identified in versions prior to 3.CVE-2025-303635.4WeGIA is a Web manager for charitable institutions. A stored Cross-Site Scripting (XSS) vulnerability was identified in versions prior to 3.CVE-2025-303649.8WeGIA is a Web manager for charitable institutions. A SQL Injection vulnerability was identified in versions prior to 3.2.8 in the endpoint CVE-2025-303659.8WeGIA is a Web manager for charitable institutions. A SQL Injection vulnerability was identified in versions prior to 3.2.8 in the endpoint CVE-2025-303665.4WeGIA is a Web manager for charitable institutions. Versions prior to 3.2.8 are vulnerable to stored cross-site scripting. This vulnerabilit