CVE-2025-20621
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mattermost | Mattermost | 10.2.0 <= 10.2.0 | affected |
| Mattermost | Mattermost | 9.11.0 <= 9.11.5 | affected |
| Mattermost | Mattermost | 10.0.0 <= 10.0.3 | affected |
| Mattermost | Mattermost | 10.1.0 <= 10.1.3 | affected |
| Mattermost | Mattermost | 10.3.0 | unaffected |
| Mattermost | Mattermost | 2.23.0 | unaffected |
| Mattermost | Mattermost | 10.2.1 | unaffected |
| Mattermost | Mattermost | 9.11.6 | unaffected |
| Mattermost | Mattermost | 10.0.4 | unaffected |
| Mattermost | Mattermost | 10.1.4 | unaffected |
Weaknesses
- CWE-1287: CWE-1287: Improper Validation of Specified Type of Input
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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