CVE-2026-42553

Cinny (Matrix client) before version 4.10.3 is affected by a token-disclosure vulnerability in two parts: (1) EmojiBoard fallback uses an untrusted pack.meta.avatar as a MXC URL, enabling an attacker-controlled HTTP(S) URL in a malicious emote pack; (2) the service worker attaches the user’s Auth...

EUVD-2026-32612

Cinny is a Matrix client. Prior to 4.10.3, A remote authenticated attacker who shares a room with a victim and has permissions to create room emotes for example in a DM can cause the victim's client to send their Matrix access token to an attacker-controlled server. This occurs when the victim...

Cinny 输入验证错误漏洞

Cinny is a simple and secure instant messaging client developed by Cinny OpenSource. Versions of Cinny prior to 4.10.3 contained a vulnerability related to input validation errors. This vulnerability arose due to EmojiBoard using an untrusted pack.meta.avatar as a URL without validation, and...

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...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: The entire AP matrix is always filtered. The vfioapmdevfiltermatrix function is called whenever a new adapter or domain is assigned to the mdev. The purpose of this function is to update the guest’s AP configuration...

Astra Linux – Vulnerability in Thunderbird

The olmsessiondescribe function in Matrix libolm before version 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fixed a memory leak in the vfioap device driver. The device release callback function invoked to release the matrix device uses the devgetdrvdata function to retrieve the pointer to the vfiomatrixdev object in order...

Astra Linux – Vulnerability in Thunderbird

matrix-js-sdk is a client-server SDK for the Matrix messaging protocol, designed for JavaScript. In versions prior to 19.4.0, events sent with special strings in key locations could temporarily disrupt or hinder the proper functioning of matrix-js-sdk, potentially affecting the consumer’s ability...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mt7530: Fix VLAN traffic leaks The PCRMATRIX field was set to all 1’s when VLAN filtering is enabled, but it wasn’t reset when VLAN filtering was disabled. This could lead to traffic leaks: ip link add br0 type bridge...

MAL-2026-4019 Malicious code in @antv/gl-matrix (npm)

Part of the Mini Shai-Hulud supply chain attack campaign in which a threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst. Each malicious version injects a preinstall hook that executes a 498KB obfuscated Bun...

MAL-2026-4067 Malicious code in @antv/matrix-util (npm)

Part of the Mini Shai-Hulud supply chain attack campaign in which a threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst. Each malicious version injects a preinstall hook that executes a 498KB obfuscated Bun...

Malicious code in @antv/gl-matrix (npm)

Part of the Mini Shai-Hulud supply chain attack campaign in which a threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst. Each malicious version injects a preinstall hook that executes a 498KB obfuscated Bun...

1g6table (=0.1.0), @actonate/mirkwood-rx (=0.10.9) +1549 more potentially affected by unknown CVE via @antv/gl-matrix (=2.7.1)

@antv/gl-matrix NPM version =2.7.1 is affected by a known vulnerability. The following packages have a transitive dependency on @antv/gl-matrix and may be impacted: - 1g6table =0.1.0 - @actonate/mirkwood-rx =0.10.9 - @aegis.inc/flow =0.0.1-beta, =0.1.0, =0.5.0-alpha.0, =0.1.0, =0.5.0-alpha.0,...

1g6table (=0.1.0), 7qb (=0.0.17) +1356 more potentially affected by unknown CVE via @antv/matrix-util (>=3.0.4 <=3.1.0-beta.3)

@antv/matrix-util NPM version =3.0.4, =1.1.0, =0.1.1, =0.1.1, =0.1.0, =0.0.2, =0.1.2, =0.9.1, =1.0.0, =0.2.0, =1.1.15, =1.0.4, =2.1.0 and more Source cves: unknown CVE Source advisory: SNYK:JS-ANTVMATRIXUTIL-16754473...

raiden (>=0.100.2 <=0.100.3rc1) potentially affected by CVE-2026-45076 via matrix-synapse (=0.33.9)

matrix-synapse PYPI version =0.33.9 is affected by a known vulnerability. The following packages have a transitive dependency on matrix-synapse and may be impacted: - raiden =0.100.2, =0.100.3rc1 Source cves: CVE-2026-45076 Source advisory: OSV:GHSA-6QF2-7X63-MM6V...

Improper Check for Unusual or Exceptional Conditions

Overview matrix-synapse is an ecosystem for open federated Instant Messaging and VoIP. Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions in the pagination process for federated rooms. An attacker can cause clients to fail to display room...

Asymmetric Resource Consumption (Amplification)

Overview matrix-synapse is an ecosystem for open federated Instant Messaging and VoIP. Affected versions of this package are vulnerable to Asymmetric Resource Consumption Amplification through the handling of authenticated user requests. An attacker can exhaust CPU resources and cause service...

raiden (>=0.100.2 <=0.100.3rc1) potentially affected by CVE-2026-45078 via matrix-synapse (=0.33.9)

matrix-synapse PYPI version =0.33.9 is affected by a known vulnerability. The following packages have a transitive dependency on matrix-synapse and may be impacted: - raiden =0.100.2, =0.100.3rc1 Source cves: CVE-2026-45078 Source advisory: OSV:GHSA-8Q93-326V-3M7G...

Exploiting LLM Agent Supply Chains Via Payload-Less Skills

Autonomous agents powered by Large Language Models LLMs acquire external functionalities through third-party skills available in open marketplaces. Adopting these integrations broadens the potential attack surface, prompting a need for systematic security evaluation. Current auditing mechanisms a...