Detections
Analytics

SCA: security update for matrix-synapse (GHSA-f3wc-3vxv-xmvr)

medium Tenable Cloud Security Plugin ID 414238

Description

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

 - 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 create certain state events can disable
 outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are
 not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of
 `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse
 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse
 1.74 or newer urgently. (CVE-2023-32323)

See Also

https://github.com/advisories/GHSA-f3wc-3vxv-xmvr

Plugin Details

Severity: Medium

ID: 414238

Version: Revision 1.7

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: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2023-32323

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.9

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.3

Threat Score: 2.1

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/24/2023

Vulnerability Publication Date: 5/24/2023

Reference Information

CVE: CVE-2023-32323

cwe: CWE-20