VYPR
← All advisories
Medium severity4.3NVD Advisory· Published Jun 19, 2020· Updated Jun 17, 2026

CVE-2018-21256

CVE-2018-21256

Description

An issue was discovered in Mattermost Server before 5.1. It allows attackers to bypass intended access restrictions (for group-message channel creation) via the Group message slash command.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Mattermost/Mattermost2 versions
    cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*range: <5.1.0
    • (no CPE)range: <5.1
  • Mattermost/Serverdescription

Patches

Vulnerability mechanics

References

1

News mentions

0

No linked articles in our index yet.