synapse

========================================================================= Synapse |support| |development| |documentation| |license| |pypi| |python| Synapse is now actively maintained at element-hq/synapse Synapse is an open-source Matrix homeserver developed from 2019 through 2023 as part of the...

Astra Linux – Vulnerability in Thunderbird

matrix-js-sdk is a client-server SDK for the Matrix messaging protocol, designed for JavaScript. Version 34.11.0 and earlier of matrix-js-sdk was vulnerable to client-side path traversal attacks through crafted MXC URIs. A malicious room member could trigger clients using matrix-js-sdk to send...

Astra Linux – Vulnerability in Thunderbird

The Matrix JavaScript SDK is the Matrix Client-Server software development kit SDK for JavaScript. Prior to version 19.7.0, an attacker who cooperated with a malicious home server could interfere with the verification process between two users, substituting their own cross-signed user identity wi...

Astra Linux – Vulnerability in Thunderbird

The Matrix JavaScript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker working alongside a malicious home server could create messages that appeared to be sent by another person, without any indication such as a gray shield. Additionally, a sophisticated...

CVE-2026-45056

A flaw was found in matrix-sdk-crypto. This component, responsible for handling end-to-end encryption in Matrix clients, was missing a user ID check during the decryption of Olm-encrypted events that contained the senderdevicekeys property. An attacker, in collusion with the homeserver operator,...

CVE-2026-45056

matrix-sdk-crypto is a no-network-IO implementation of a state machine that handles end-to-end encryption for Matrix clients. Starting in version 0.12.0 and prior to version 0.17.0, the matrix-sdk-crypto crate was missing a check for the user ID when decrypting an Olm-encrypted event containing t...

CVE-2026-45057

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the matrix-sdk-ui crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious...

CVE-2026-45056 Matrix Rust SDK: Sender-binding gaps in to-device and room-key attribution

matrix-sdk-crypto is a no-network-IO implementation of a state machine that handles end-to-end encryption for Matrix clients. Starting in version 0.12.0 and prior to version 0.17.0, the matrix-sdk-crypto crate was missing a check for the user ID when decrypting an Olm-encrypted event containing t...

CVE-2026-45056 Matrix Rust SDK: Sender-binding gaps in to-device and room-key attribution

matrix-sdk-crypto is a no-network-IO implementation of a state machine that handles end-to-end encryption for Matrix clients. Starting in version 0.12.0 and prior to version 0.17.0, the matrix-sdk-crypto crate was missing a check for the user ID when decrypting an Olm-encrypted event containing t...

CVE-2026-45057 matrix-sdk-ui: Incomplete edit validation

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the matrix-sdk-ui crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious...

CVE-2026-45057

CVE-2026-45057 affects the matrix-sdk-ui Rust crate (part of matrix-rust-sdk) prior to version 0.16.1 . The message edit validation logic is missing a check: when replacing an encrypted event, the replacement event is not required to be encrypted itself. This allows a malicious homeserver adminis...

CVE-2026-45057 matrix-sdk-ui: Incomplete edit validation

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the matrix-sdk-ui crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious...

EUVD-2026-76764

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the matrix-sdk-ui crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious...

CVE-2026-45057 matrix-sdk-ui: Incomplete edit validation

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the matrix-sdk-ui crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious...

CVE-2026-45056: Authentication Bypass by Spoofing

matrix-sdk-crypto is a no-network-IO implementation of a state machine that handles end-to-end encryption for Matrix clients. Starting in version 0.12.0 and prior to version 0.17.0, the matrix-sdk-crypto crate was missing a check for the user ID when decrypting an Olm-encrypted event containing t...

CVE-2026-45057: Insufficient Verification of Data Authenticity

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the matrix-sdk-ui crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious...

CVE-2026-55850 Element Web: A malicious homeserver can inject HTML in Element Web using its homepage

Element Web is a Matrix web client built using the Matrix React SDK. Prior to 1.12.22, EmbeddedPage in apps/web/src/components/structures/EmbeddedPage.tsx renders homeserver-supplied homepage content through dangerouslySetInnerHTML without passing it through sanitizedHtmlNode. A malicious...

CVE-2026-55850 Element Web: A malicious homeserver can inject HTML in Element Web using its homepage

Element Web is a Matrix web client built using the Matrix React SDK. Prior to 1.12.22, EmbeddedPage in apps/web/src/components/structures/EmbeddedPage.tsx renders homeserver-supplied homepage content through dangerouslySetInnerHTML without passing it through sanitizedHtmlNode. A malicious...

Matrix Homeserver - Version Detection

Extract the Matrix homeserver name and version !/usr/bin/env python3 -- coding: utf-8 -- """Extract the Matrix homeserver name and version.""" from kittysploit import from lib.protocols.http.httpclient import Httpclient class ModuleScanner, Httpclient: info = 'name': 'Matrix Homeserver - Version...

Gira HomeServer 4 Login Panel - Detect

Gira HomeServer 4 login panel was detected. !/usr/bin/env python3 -- coding: utf-8 -- """Gira HomeServer 4 login panel was detected.""" from kittysploit import from lib.protocols.http.httpclient import Httpclient class ModuleScanner, Httpclient: info = 'name': 'Gira HomeServer 4 Login Panel -...