Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.
Published 2023-06-16 09:15:10
Updated 2023-06-26 17:48:14
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2023-2787

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-2787

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.8
3.6
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.8
3.6
Mattermost, Inc.

CWE ids for CVE-2023-2787

  • The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
    Assigned by:
    • nvd@nist.gov (Primary)
    • responsibledisclosure@mattermost.com (Secondary)

References for CVE-2023-2787

Products affected by CVE-2023-2787

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