What is GHSA-vrh2-rprg-rgc6?

GHSA-vrh2-rprg-rgc6 is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost Server does not safeguard against phishing via error page links

Which CVE IDs does GHSA-vrh2-rprg-rgc6 cover?

GHSA-vrh2-rprg-rgc6 covers the following CVE IDs: CVE-2017-18891. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-vrh2-rprg-rgc6?

GHSA-vrh2-rprg-rgc6 has a CVSS v3 base score of 6.1, published by GitHub Security Advisories.

Which products are affected by GHSA-vrh2-rprg-rgc6?

GHSA-vrh2-rprg-rgc6 affects 3 products, including: go/github.com/mattermost/mattermost-server:\u003e= 4.1.0, \u003c 4.1.1; go/github.com/mattermost/mattermost-server:\u003e= 4.2.0-rc1, \u003c 4.2.0; go/github.com/mattermost/mattermost-server:\u003c 4.0.5.

GHSA-vrh2-rprg-rgc6MediumCVSS 6.1

Mattermost Server does not safeguard against phishing via error page links

Vendor

GitHub Security Advisories

Published

May 24, 2022

Last Modified

January 12, 2026

🔗 CVE IDs covered (1)

CVE-2017-18891 →

📋 Description

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows Phishing because an error page can have a link.

🎯 Affected products3

go/github.com/mattermost/mattermost-server:>= 4.1.0, < 4.1.1
go/github.com/mattermost/mattermost-server:>= 4.2.0-rc1, < 4.2.0
go/github.com/mattermost/mattermost-server:< 4.0.5

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2017-18891
https://github.com/mattermost/mattermost/pull/7378
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-vrh2-rprg-rgc6