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22 vulnerabilities found for mattermost_server by mattermost

CVE-2025-11794 (GCVE-0-2025-11794)
Vulnerability from nvd
Published
2025-11-14 10:45
Modified
2025-11-14 10:45
Severity ?
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.3
Version: 10.5.0   ≤ 10.5.11
Version: 10.12.0   ≤ 10.12.0
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{
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        {
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            },
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              "status": "affected",
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              "versionType": "semver"
            },
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            },
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            },
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              "version": "10.5.12"
            },
            {
              "status": "unaffected",
              "version": "10.12.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Christian Iwata Nilsson"
        }
      ],
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        {
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        }
      ],
      "metrics": [
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            "confidentialityImpact": "HIGH",
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      ],
      "source": {
        "advisory": "MMSA-2025-00541",
        "defect": [
          "https://mattermost.atlassian.net/browse/MM-65742"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Password hash and MFA secret returned in user email verification endpoint"
    }
  },
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}

CVE-2025-55073 (GCVE-0-2025-55073)
Vulnerability from nvd
Published
2025-11-14 08:03
Modified
2025-11-14 15:46
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.3
Version: 10.5.0   ≤ 10.5.11
Version: 10.12.0   ≤ 10.12.0
 Create a notification for this product.
Show details on NVD website

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{
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          "https://mattermost.atlassian.net/browse/MM-64368"
        ],
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      },
      "title": "MS Teams plugin OAuth allows editing arbitrary posts"
    }
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  "cveMetadata": {
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  },
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CVE-2025-55070 (GCVE-0-2025-55070)
Vulnerability from nvd
Published
2025-11-14 08:02
Modified
2025-11-14 15:47
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: <11   ≤ <11
 Create a notification for this product.
Show details on NVD website

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{
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CVE-2025-41436 (GCVE-0-2025-41436)
Vulnerability from nvd
Published
2025-11-14 08:00
Modified
2025-11-14 15:48
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions <11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: <11.0   ≤ <11.0
 Create a notification for this product.
Show details on NVD website

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{
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CVE-2025-11776 (GCVE-0-2025-11776)
Vulnerability from nvd
Published
2025-11-14 07:58
Modified
2025-11-14 15:49
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the `/api/v4/teams/{team_id}/channels/search_archived` endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: <11   ≤ <11
 Create a notification for this product.
Show details on NVD website

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{
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      ],
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CVE-2025-11777 (GCVE-0-2025-11777)
Vulnerability from nvd
Published
2025-11-13 17:32
Modified
2025-11-13 18:01
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.3
Version: 10.5.0   ≤ 10.5.11
 Create a notification for this product.
Show details on NVD website

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CVE-2025-58075 (GCVE-0-2025-58075)
Vulnerability from nvd
Published
2025-10-16 08:20
Modified
2025-10-22 03:55
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
Summary
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.1
Version: 10.10.0   ≤ 10.10.2
Version: 10.5.0   ≤ 10.5.10
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
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CVE-2025-58073 (GCVE-0-2025-58073)
Vulnerability from nvd
Published
2025-10-16 08:44
Modified
2025-10-22 03:55
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
Summary
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the OAuth state.
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.1
Version: 10.10.0   ≤ 10.10.2
Version: 10.5.0   ≤ 10.5.10
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2025-54499 (GCVE-0-2025-54499)
Vulnerability from nvd
Published
2025-10-16 08:17
Modified
2025-10-16 13:51
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-208 - Observable Timing Discrepancy
Summary
Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.10
Version: 10.11.0   ≤ 10.11.2
 Create a notification for this product.
Show details on NVD website

To clipboard 

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      "title": "Insecure string comparison enables timing attacks"
    }
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    "datePublished": "2025-10-16T08:17:20.937Z",
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    "dateUpdated": "2025-10-16T13:51:10.320Z",
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  },
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CVE-2025-41410 (GCVE-0-2025-41410)
Vulnerability from nvd
Published
2025-10-16 08:39
Modified
2025-10-16 14:00
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
Summary
Mattermost versions 10.10.x <= 10.10.2, 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to validate email ownership during Slack import process which allows attackers to create verified user accounts with arbitrary email domains via malicious Slack import data to bypass email-based team access restrictions
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.10.0   ≤ 10.10.2
Version: 10.5.0   ≤ 10.5.10
Version: 10.11.0   ≤ 10.11.2
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
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      {
        "metrics": [
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CVE-2025-10545 (GCVE-0-2025-10545)
Vulnerability from nvd
Published
2025-10-16 08:24
Modified
2025-10-16 14:14
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when adding channel members which allows guest users to add any team members to their private channels via the `/api/v4/channels/{channel_id}/members` endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.10
Version: 10.11.0   ≤ 10.11.2
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
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CVE-2025-41443 (GCVE-0-2025-41443)
Vulnerability from nvd
Published
2025-10-16 08:10
Modified
2025-10-29 08:06
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
Summary
Mattermost versions 10.5.x <= 10.5.12, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the `/api/v4/teams/{team_id}/channels/ids` endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.12
Version: 10.11.0   ≤ 10.11.2
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
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            "other": {
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CVE-2025-47700 (GCVE-0-2025-47700)
Vulnerability from nvd
Published
2025-08-21 07:28
Modified
2025-08-21 14:53
Severity ?
3.5 (Low) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Summary
Mattermost Server versions 10.5.x <= 10.5.9 utilizing the Agents plugin fail to reject empty request bodies which allows users to trick users into clicking malicious links via post actions
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.8
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
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      {
        "metrics": [
          {
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        ],
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      },
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}

CVE-2025-11794 (GCVE-0-2025-11794)
Vulnerability from cvelistv5
Published
2025-11-14 10:45
Modified
2025-11-14 10:45
Severity ?
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.3
Version: 10.5.0   ≤ 10.5.11
Version: 10.12.0   ≤ 10.12.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Mattermost",
          "vendor": "Mattermost",
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              "version": "10.11.0",
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CVE-2025-55073 (GCVE-0-2025-55073)
Vulnerability from cvelistv5
Published
2025-11-14 08:03
Modified
2025-11-14 15:46
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.3
Version: 10.5.0   ≤ 10.5.11
Version: 10.12.0   ≤ 10.12.0
 Create a notification for this product.
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CVE-2025-55070 (GCVE-0-2025-55070)
Vulnerability from cvelistv5
Published
2025-11-14 08:02
Modified
2025-11-14 15:47
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: <11   ≤ <11
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2025-41436 (GCVE-0-2025-41436)
Vulnerability from cvelistv5
Published
2025-11-14 08:00
Modified
2025-11-14 15:48
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions <11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: <11.0   ≤ <11.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2025-11776 (GCVE-0-2025-11776)
Vulnerability from cvelistv5
Published
2025-11-14 07:58
Modified
2025-11-14 15:49
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the `/api/v4/teams/{team_id}/channels/search_archived` endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: <11   ≤ <11
 Create a notification for this product.
Show details on NVD website

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CVE-2025-11777 (GCVE-0-2025-11777)
Vulnerability from cvelistv5
Published
2025-11-13 17:32
Modified
2025-11-13 18:01
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.3
Version: 10.5.0   ≤ 10.5.11
 Create a notification for this product.
Show details on NVD website

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{
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CVE-2025-58073 (GCVE-0-2025-58073)
Vulnerability from cvelistv5
Published
2025-10-16 08:44
Modified
2025-10-22 03:55
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
Summary
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the OAuth state.
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.1
Version: 10.10.0   ≤ 10.10.2
Version: 10.5.0   ≤ 10.5.10
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
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CVE-2025-58075 (GCVE-0-2025-58075)
Vulnerability from cvelistv5
Published
2025-10-16 08:20
Modified
2025-10-22 03:55
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
Summary
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.11.0   ≤ 10.11.1
Version: 10.10.0   ≤ 10.10.2
Version: 10.5.0   ≤ 10.5.10
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2025-41443 (GCVE-0-2025-41443)
Vulnerability from cvelistv5
Published
2025-10-16 08:10
Modified
2025-10-29 08:06
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
Summary
Mattermost versions 10.5.x <= 10.5.12, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the `/api/v4/teams/{team_id}/channels/ids` endpoint
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.12
Version: 10.11.0   ≤ 10.11.2
 Create a notification for this product.
Show details on NVD website

To clipboard 

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