CVE-2023-2784
Apps Framework allows install requests from regular members via an internal path
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing install requests to the Apps allowing a regular user send install requests to the Apps.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Apps Framework allows install requests from regular members via an internal path
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing install requests to the Apps allowing a regular user send install requests to the Apps.
- Record
CVE-2023-2784- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2023-34240
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing install requests to the Apps allowing a regular user send install requests to the Apps.
- Record
EUVD-2023-34240- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8jf2-78m7-7f8v
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing `install`...
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing install requests to the Apps allowing a regular user send install requests to the Apps.
- Record
GHSA-8jf2-78m7-7f8v- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing install requests to the Apps allowing a regular user send install requests to the Apps.
- Record
CVE-2023-2784- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
Apps Framework allows install requests from regular members via an internal path
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing install requests to the Apps allowing a regular user send install requests to the Apps.
- Record
CVE-2023-2784- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-2784 is a medium vulnerability (CVSS 4.2) in Mattermost, published June 16, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. No source names a fixed version.