CVE-2024-41144
Malicious remote can create/update/delete arbitrary posts in arbitrary channels
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Malicious remote can create/update/delete arbitrary posts in arbitrary channels
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
CVE-2024-41144- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2024-2662
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
EUVD-2024-2662- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vg67-chm7-8m3j
Mattermost allows remote actor to create/update/delete posts in arbitrary channels
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
GHSA-vg67-chm7-8m3j- CVSS 4.0
- 7.0 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
CVE-2024-41144- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L - CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284
- Updated
- 2026-11-02
OSV
Malicious remote can create/update/delete arbitrary posts in arbitrary channels
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
CVE-2024-41144- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284
- Updated
- 2026-11-02
OSVGHSA-vg67-chm7-8m3j
Mattermost allows remote actor to create/update/delete posts in arbitrary channels
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
GHSA-vg67-chm7-8m3j- CVSS 4.0
- 7.0 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284
- Updated
- 2026-11-02
OSVBIT-mattermost-2024-41144 No score
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
- Record
BIT-mattermost-2024-41144- Updated
- 2026-11-02
OSVGO-2024-3023 No score
Mattermost allows remote actor to create/update/delete posts in arbitrary channels in github.com/mattermost/mattermost-server
Mattermost allows remote actor to create/update/delete posts in arbitrary channels in github.com/mattermost/mattermost-server
- Record
GO-2024-3023- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/mattermost/mattermost/server/v8Go |
9.5.0 up to 9.5.7 | 9.5.7 |
github.com/mattermost/mattermost/server/v8Go |
9.7.0 up to 9.7.6 | 9.7.6 |
github.com/mattermost/mattermost/server/v8Go |
9.8.0 up to 9.8.2 | 9.8.2 |
github.com/mattermost/mattermost/server/v8Go |
9.9.0 to 9.9.0 | 9.9.1 |
github.com/mattermost/mattermost/server/v8Go |
before 8.0.0-20240619142046-8181a9ddffc0 | 8.0.0-20240619142046-8181a9ddffc0 |
github.com/mattermost/mattermostGo |
before 5.3.2-0.20240619142046-8181a9ddffc0 | 5.3.2-0.20240619142046-8181a9ddffc0 |
mattermostBitnami |
9.5.0 up to 9.5.7, 9.7.0 up to 9.7.6, 9.8.0 up to 9.8.2, 9.9.0 to 9.9.0 | 9.5.79.7.69.8.2 |
github.com/mattermost/mattermost/server/v8Go |
9.9.0 up to 9.9.1 | 9.9.1 |
github.com/mattermost/mattermost-serverGo |
9.5.0+incompatible up to 9.5.7+incompatible, 9.7.0+incompatible up to 9.7.6+incompatible, 9.8.0+incompatible up to 9.8.2+incompatible, 9.9.0+incompatible up to 9.9.1+incompatible | 9.5.7+incompatible9.7.6+incompatible9.8.2+incompatible9.9.1+incompatible |
github.com/mattermost/mattermost-server/v5Go |
All versions | None known |
github.com/mattermost/mattermost-server/v6Go |
All versions | None known |
github.com/mattermost/mattermost/server/v8Go |
All versions | None known |
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-2024-41144 is a medium vulnerability (CVSS 5.5) in Mattermost, published August 1, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. Fixed in github.com/mattermost/mattermost/server/v8 9.5.7.