Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to enforce administrator authorization on the {{setDefaultInstance}} call within the {{/gitlab connect}} command handler, which allows any au…
Historical advisory saved 11 Nov 2026 13:07:37 UTC. The publisher may have updated it since then. Latest advisory.
euvd · EUVD-2026-38246
PublishedMattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to enforce administrator authorization on the {{setDefaultInstance}} call within the {{/gitlab connect}} command handler, which allows any authenticated user to overwrite the global default GitLab instance configuration via the {{/gitlab connect <instance-name>}} slash command.. Mattermost Advisory ID: MMSA-2026-00644
Additional publisher context
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Jun 22, 2026, 1:34:21 PM
dateUpdated: Jun 22, 2026, 3:39:29 PM
1 related source bulletins · separate from aliases
WID-SEC-W-2026-1650: Mattermost (Desktop, Server und Mobile): Mehrere Schwachstellen
CVE-2026-5139 · CVE-2026-6062 · CVE-2026-6673 · CVE-2026-8074 · CVE-2026-9162 · CVE-2026-22880
- Source published
- Jun 22, 2026, 1:34:21 PM (timezone not stated)
- Source modified
- Jun 22, 2026, 3:39:29 PM (timezone not stated)
- Saved here
- 11 Nov 2026 13:07:37 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
EUVD CVSS 3.1 · 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L