VULNERABILITY INTELLIGENCE

CVE-2024-39777

CVSS score8.7 HIGH
EPSS probability0.36%
CISA KEVNot currently listed
Published2024-08-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-284
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references