VDB
GHSA-mpc7-mm28-f6wq
GHSA-mpc7-mm28-f6wq
PUBLISHED
CVSS 4.300000190734863 MEDIUM
Record from GitHub Advisory Database · Published March 26, 2026
github.com/mattermost/mattermost/server/v8 is fixed in 11.4.1, 11.3.2, 11.2.3 and 3 more (Go Modules)
Mattermost allows authenticated guest users to enumerate user IDs outside their allowed visibility scope
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| github.com/mattermost/mattermost/server/v8 | Go Modules | 11.4.1, 11.3.2, 11.2.3, 10.11.11, 8.0.0-20260217110922-b7d4a1f1f59b, 8.0.0-20260217110922 |
Risk scores
CVSS 3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
| Vendor | Product | Versions |
|---|---|---|
| github.com | mattermost/mattermost/server/v8 | 11.4.0, 11.3.0-rc1, 10.11.0-rc1 |
Timeline
- Mar 26, 2026 CVE Published
- Mar 31, 2026 CVE Updated
- Apr 30, 2026 Security Advisory
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln GHSA-mpc7-mm28-f6wq
vulnetix vdb fixes GHSA-mpc7-mm28-f6wqOr with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/GHSA-mpc7-mm28-f6wq/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart