Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the webapp to crash via creating and sending such a post to a channel.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
History
Wed, 01 Oct 2025 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost mattermost Server
|
|
| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* cpe:2.3:a:mattermost:mattermost_server:10.2.0:-:*:*:*:*:*:* |
|
| Vendors & Products |
Mattermost mattermost Server
|
Thu, 16 Jan 2025 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 16 Jan 2025 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the webapp to crash via creating and sending such a post to a channel. | |
| Title | Webapp crash via object that can't be cast to String in Attachment Field | |
| Weaknesses | CWE-1287 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: Mattermost
Published: 2025-01-16T18:16:28.042Z
Updated: 2025-01-16T18:57:02.927Z
Reserved: 2025-01-16T18:10:41.926Z
Link: CVE-2025-20621
Updated: 2025-01-16T18:56:57.789Z
Status : Analyzed
Published: 2025-01-16T19:15:29.960
Modified: 2025-10-01T17:54:41.760
Link: CVE-2025-20621
No data.