Path traversal in Mattermost Legal Hold plugin via unsanitized file name from federated peer allows arbitrary file write.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost | unaffected |
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No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost |
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Vendor Solution
Update Mattermost Plugins to versions .0 or higher.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.296% probability within 30 days)
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost legal Hold
|
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| CPEs | cpe:2.3:a:mattermost:legal_hold:*:*:*:*:*:mattermost:*:* | |
| Vendors & Products |
Mattermost legal Hold
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
|
| Vendors & Products |
Mattermost
Mattermost mattermost |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost Plugins versions <=1.1.5 fail to sanitize filenames received from federated peers before using them to construct export destination paths, which allows an administrator of a remote federated Mattermost server to write files to arbitrary locations within the target server's filestore via a malicious filename delivered through the shared-channel attachment sync protocol. Mattermost Advisory ID: MMSA-2026-00659 | |
| Title | Path traversal in Mattermost Legal Hold plugin via unsanitized file name from federated peer allows arbitrary file write. | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
|