CVE-2025-20630— Mobile crash via object that can't be cast to String in Attachment Field
Quick assessment
Affected
Mattermost Mattermost
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Mattermost Mobile Apps是美国Mattermost公司的一款消息传递移动应用程序。 Mattermost Mobile Apps 2.22.0版本存在安全漏洞，该漏洞源于无法正确处理带有附件的帖子，允许攻击者通过创建此类帖子并将其发送到频道来导致移动设备崩溃。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-20630
Vulnerability Information
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Vulnerability Title
Mobile crash via object that can't be cast to String in Attachment Field
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost Mobile versions <=2.22.0 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the mobile to crash via creating and sending such a post to a channel.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1287
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost Mobile Apps 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost Mobile Apps是美国Mattermost公司的一款消息传递移动应用程序。 Mattermost Mobile Apps 2.22.0版本存在安全漏洞，该漏洞源于无法正确处理带有附件的帖子，允许攻击者通过创建此类帖子并将其发送到频道来导致移动设备崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mattermost | Mattermost | 0 ~ <=2.22.0 | - |
|
II. Public POCs for CVE-2025-20630
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2025-01-16 · 3 CVEs total
| CVE-2025-20621 | 6.5 MEDIUM | Webapp crash via object that can't be cast to String in Attachment Field |
| CVE-2025-20072 | 6.5 MEDIUM | Mobile crash via improper validation of proto style in attachments |
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V. Comments for CVE-2025-20630
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