Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-server/v5, github.com/mattermost/mattermost-server/v6 (GHSA-9hj7-v56g-rhf6)

medium Tenable Cloud Security Plugin ID 421721

Description

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

 - When processing an email invite to a private channel on a team, Mattermost fails to validate the inviter's
 permission to that channel, allowing an attacker to invite themselves to a private channel.
 (CVE-2023-1774)

See Also

https://github.com/advisories/GHSA-9hj7-v56g-rhf6

Plugin Details

Severity: Medium

ID: 421721

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 3/28/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.51

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2023-1774

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/31/2023

Vulnerability Publication Date: 3/31/2023

Reference Information

CVE: CVE-2023-1774

cwe: CWE-862