CVE-2026-63097

Dendrite through 0.13.8 contains an improper access control vulnerability in the syncapi /context endpoint syncapi/routing/context.go that allows authenticated local users to access post-leave room state events by exploiting a flawed membership check that evaluates only the RoomExists field while...

CVE-2026-63097 Dendrite 0.13.8 syncapi /context Endpoint Post-Leave State Exposure

Dendrite through 0.13.8 contains an improper access control vulnerability in the syncapi /context endpoint syncapi/routing/context.go that allows authenticated local users to access post-leave room state events by exploiting a flawed membership check that evaluates only the RoomExists field while...

CVE-2026-63097

Dendrite through 0.13.8 contains an improper access control vulnerability in the syncapi /context endpoint syncapi/routing/context.go that allows authenticated local users to access post-leave room state events by exploiting a flawed membership check that evaluates only the RoomExists field while...

CVE-2026-63097

Dendrite 0.13.8 is affected by an improper access-control in the syncapi /context endpoint (syncapi/routing/context.go). The flaw uses a flawed membership check that only considers RoomExists, ignoring IsInRoom, HasBeenInRoom, and Membership fields, allowing authenticated local users who have lef...

PYSEC-2026-1610 Synapse Matrix has a partial room state leak via Sliding Sync

Impact The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. Patches Synapse version 1.120.1 fixes the problem. Workarounds Disable Sliding Sync. References...

EUVD-2024-3430

Malicious code in bioql PyPI...

Linux Distros Unpatched Vulnerability : CVE-2023-32323

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to...

Sensitive Information Exposure

Matrix-synapse is vulnerable to information disclosure. The vulnerability is due to improper handling of Sliding Sync, which can leak partial room state changes to users who are no longer in a room, while non-state events remain unaffected...

SUSE CVE-2024-53867

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

GHSA-56W4-5538-8V8H Synapse Matrix has a partial room state leak via Sliding Sync

Impact The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. Patches Synapse version 1.120.1 fixes the problem. Workarounds Disable Sliding Sync. References...

Synapse Matrix has a partial room state leak via Sliding Sync

Impact The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. Patches Synapse version 1.120.1 fixes the problem. Workarounds Disable Sliding Sync. References...

DEBIAN-CVE-2024-53867

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

CVE-2024-53867

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

UBUNTU-CVE-2024-53867

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

CVE-2024-53867 Synapse Matrix has a partial room state leak via Sliding Sync

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

CVE-2024-53867

Synapse (Matrix homeserver) Sliding Sync flaw affects versions 1.113.0rc1 through 1.120.0, leaking partial room state changes to users who left the room. Non-state events (e.g., messages) are not affected. The issue is fixed in 1.120.1. Affected CVE: CVE-2024-53867. No exploitation details are pr...

CVE-2024-53867 Synapse Matrix has a partial room state leak via Sliding Sync

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

CVE-2024-53867 Synapse Matrix has a partial room state leak via Sliding Sync

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1...

PT-2024-35965

Name of the Vulnerable Software and Affected Versions: Synapse versions 1.113.0rc1 through 1.120.0 Description: The Sliding Sync feature in Synapse can leak partial room state changes to users who are no longer in a room. This issue does not affect non-state events, such as messages...

Element Synapse 安全漏洞

Element Synapse is an open source Matrix Home Server implementation from Element Open Source. A security vulnerability exists in Element Synapse that stems from the Sliding Sync feature that may leak some room state changes to users who are no longer in the room...