go package report

Is github.com/mattermost/mattermost-server/v5 safe?

Q: Is github.com/mattermost/mattermost-server/v5 safe to install?

CyberXYZ does not call a package safe in absolute terms. It records 98 known vulnerabilities for github.com/mattermost/mattermost-server/v5 (go), the worst rated MODERATE, and no malicious-package signal. Whether it is acceptable depends on the version you run.

Q: Does github.com/mattermost/mattermost-server/v5 have known vulnerabilities?

Yes. CyberXYZ records 98 known vulnerabilities for github.com/mattermost/mattermost-server/v5 (go), the worst rated MODERATE. These include GHSA-j6gg-r5jc-47cm, GHSA-qj47-w9f2-qg44, GHSA-x67c-v8jr-p29r, GHSA-q453-638c-h4mr, GHSA-h469-4fcf-p23h.

Q: How do I check github.com/mattermost/mattermost-server/v5 before installing?

Search github.com/mattermost/mattermost-server/v5 in CyberXYZ Check at https://cyberxyz.io/check?q=github.com%2Fmattermost%2Fmattermost-server%2Fv5. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.

github.com/mattermost/mattermost-server/v5 (go) has 98 known vulnerabilities, the worst rated MODERATE. No single fixed version is recorded that clears every advisory, so check each one below. No malicious-package signal is recorded.

// reach

139 direct dependencies

23 carry known advisories, worst CRITICAL

2 packages depend on it

an advisory here reaches each of them

Create a free accountfor every dependency path, dependent and what to upgrade

// ai model usage

Tracked for PyPI packages. HuggingFace models declare Python dependencies, so go packages are not covered.

cvss

4.3

medium

CVSS v3.1 base score out of 10

epss

0.21%

low

chance of exploitation in 30 days, 11th percentile of all CVEs

xyz score

not scored

CyberXYZ composite out of 10

fig. 01 — GHSA-j6gg-r5jc-47cm, the advisory selected below

// 98 advisories

GHSA-j6gg-r5jc-47cm

MODERATEGitHub ratingCVE-2025-11776

Mattermost versions < 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the…

Full advisory text at GitHub advisory or NVD.

// cvss v3.1 vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

// questions

Is github.com/mattermost/mattermost-server/v5 safe to install?

CyberXYZ does not call a package safe in absolute terms. It records 98 known vulnerabilities for github.com/mattermost/mattermost-server/v5 (go), the worst rated MODERATE, and no malicious-package signal. Whether it is acceptable depends on the version you run.

Does github.com/mattermost/mattermost-server/v5 have known vulnerabilities?

Yes. CyberXYZ records 98 known vulnerabilities for github.com/mattermost/mattermost-server/v5 (go), the worst rated MODERATE. These include GHSA-j6gg-r5jc-47cm, GHSA-qj47-w9f2-qg44, GHSA-x67c-v8jr-p29r, GHSA-q453-638c-h4mr, GHSA-h469-4fcf-p23h.

How do I check github.com/mattermost/mattermost-server/v5 before installing?

Search github.com/mattermost/mattermost-server/v5 in CyberXYZ Check at https://cyberxyz.io/check?q=github.com%2Fmattermost%2Fmattermost-server%2Fv5. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.

Checked 2026-11-14 at 06:24 UTC. The most recent advisory here was published 2026-10-01. Updated continuously from NVD, GHSA, OSV and CNA feeds.