Detections
Analytics

SCA: security update for matrix-synapse (GHSA-4822-jvwx-w47h)

medium Tenable Cloud Security Plugin ID 410036

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for
 media stream URLs without properly limiting connection time. Connections will only be terminated after
 `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived
 connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic
 and connections toward such servers if their stream URL is, for example, posted to a large room with many
 Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will
 terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not
 supported and always fails, 1.53.0 additionally implements an allow list for content types for which
 Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a
 workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse
 configuration file. (CVE-2022-41952)

See Also

https://github.com/advisories/GHSA-4822-jvwx-w47h

Plugin Details

Severity: Medium

ID: 410036

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2022-41952

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2022

Vulnerability Publication Date: 4/1/2022

Reference Information

CVE: CVE-2022-41952