VIR Vulnerability Intelligence Relay

CVE-2026-27769

low
Published 2026-04-17 · Modified 2026-04-28
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
2.5

Description

Mattermost doesn't validate whether users were correctly owned by the correct Connected Workspace

Predictions

Exploit likelihood
30%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact
EcosystemPackageVulnerableFixed
golang Gogithub.com/mattermost/mattermost-server>=8.0.0-20250721062209-4952acea88ce,<8.0.0-20260316060126-bc1a2b34b1f98.0.0-20260316060126-bc1a2b34b1f9
golang GOgithub.com/mattermost/mattermost-server>= 8.0.0-20250721062209-4952acea88ce, < 8.0.0-20260316060126-bc1a2b34b1f98.0.0-20260316060126-bc1a2b34b1f9

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.