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SCA: security update for github.com/mattermost/mattermost-server (GHSA-f7c3-7vp3-44p6)

medium Tenable Self-Hosted Container Security Plugin ID 436702

Description

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

 - An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0
 service provider. It mishandles a deny action for a redirection. (CVE-2017-18897)

See Also

https://github.com/advisories/GHSA-f7c3-7vp3-44p6

Plugin Details

Severity: Medium

ID: 436702

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 1/13/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 8.67

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2017-18897

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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: 5/24/2022

Vulnerability Publication Date: 6/19/2020

Reference Information

CVE: CVE-2017-18897

cwe: CWE-601