// For flags

CVE-2023-2787

Collapsed Reply Threads APIs leak message contents from private channels

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.

*Credits: Juho Nurminen
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-05-18 CVE Reserved
  • 2023-06-16 CVE Published
  • 2024-06-22 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-862: Missing Authorization
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://mattermost.com/security-updates 2023-06-26
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mattermost
Search vendor "Mattermost"
Mattermost
Search vendor "Mattermost" for product "Mattermost"
>= 7.1.0 <= 7.1.9
Search vendor "Mattermost" for product "Mattermost" and version " >= 7.1.0 <= 7.1.9"
-
Affected
Mattermost
Search vendor "Mattermost"
Mattermost
Search vendor "Mattermost" for product "Mattermost"
>= 7.8.0 <= 7.8.4
Search vendor "Mattermost" for product "Mattermost" and version " >= 7.8.0 <= 7.8.4"
-
Affected
Mattermost
Search vendor "Mattermost"
Mattermost
Search vendor "Mattermost" for product "Mattermost"
>= 7.9.0 <= 7.9.3
Search vendor "Mattermost" for product "Mattermost" and version " >= 7.9.0 <= 7.9.3"
-
Affected
Mattermost
Search vendor "Mattermost"
Mattermost
Search vendor "Mattermost" for product "Mattermost"
7.10.0
Search vendor "Mattermost" for product "Mattermost" and version "7.10.0"
-
Affected