One-Click Mattermost Account Takeover via Poisoned RelayState SAML Parameter
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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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | — |
Vendor Solution
Update Mattermost to versions 10.11.0, 10.10.2, 10.5.10, 10.9.5 or higher.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-29171 | Mattermost Open Redirect vulnerability |
Github GHSA |
GHSA-69j8-prx2-vx98 | Mattermost Open Redirect vulnerability |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.176% probability within 30 days)
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost mattermost
|
|
| Vendors & Products |
Mattermost mattermost
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost Server |
|
| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost
Mattermost mattermost Server |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.10.x <= 10.10.1, 10.5.x <= 10.5.9, 10.9.x <= 10.9.4 fail to validate the redirect_to parameter, allowing an attacker to craft a malicious link that, once a user authenticates with their SAML provider, could post the user’s cookies to an attacker-controlled URL. | |
| Title | One-Click Mattermost Account Takeover via Poisoned RelayState SAML Parameter | |
| Weaknesses | CWE-601 | |
| References |
| |
| Metrics |
cvssV3_1
|