Search criteria
488 vulnerabilities by Mattermost
CVE-2025-64641 (GCVE-0-2025-64641)
Vulnerability from cvelistv5 – Published: 2025-12-24 08:02 – Updated: 2025-12-24 16:35
VLAI?
Title
Mattermost Jira plugin crafted action leaks Jira issue details
Summary
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
Severity ?
4.1 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.1.0 , ≤ 11.1.0
(semver)
Affected: 11.0.0 , ≤ 11.0.5 (semver) Affected: 10.12.0 , ≤ 10.12.3 (semver) Affected: 10.11.0 , ≤ 10.11.7 (semver) Unaffected: 11.2.0 Unaffected: 11.1.1 Unaffected: 11.0.6 Unaffected: 10.12.4 Unaffected: 10.11.8 |
Credits
Juho Forsén
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CVE-2025-13767 (GCVE-0-2025-13767)
Vulnerability from cvelistv5 – Published: 2025-12-24 08:01 – Updated: 2025-12-24 16:36
VLAI?
Title
Unauthorized Read Access to Private Channel Posts via Mattermost Jira Plugin
Summary
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.
Severity ?
4.3 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.1.0 , ≤ 11.1.0
(semver)
Affected: 11.0.0 , ≤ 11.0.5 (semver) Affected: 10.12.0 , ≤ 10.12.3 (semver) Affected: 10.11.0 , ≤ 10.11.7 (semver) Unaffected: 11.2.0 Unaffected: 11.1.1 Unaffected: 11.0.6 Unaffected: 10.12.4 Unaffected: 10.11.8 |
Credits
Juho Forsén
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CVE-2025-14273 (GCVE-0-2025-14273)
Vulnerability from cvelistv5 – Published: 2025-12-22 11:24 – Updated: 2025-12-22 12:59
VLAI?
Title
Mattermost Jira plugin user spoofing enables Jira request forgery.
Summary
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin versions <=4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows a valid user ID to issue authenticated GET and POST requests to the Jira server via crafted plugin payloads that spoof the user ID and inject arbitrary issue key paths. Mattermost Advisory ID: MMSA-2025-00555
Severity ?
7.2 (High)
CWE
- CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.1.0 , ≤ 11.1.0
(semver)
Affected: 11.0.0 , ≤ 11.0.5 (semver) Affected: 10.12.0 , ≤ 10.12.3 (semver) Affected: 10.11.0 , ≤ 10.11.7 (semver) Unaffected: 11.2.0 Unaffected: 11.1.1 Unaffected: 11.0.6 Unaffected: 10.12.4 Unaffected: 10.11.8 |
Credits
Juho Forsén
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CVE-2025-13326 (GCVE-0-2025-13326)
Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI?
Title
Mattermost Desktop App fails to enable Hardened Runtime when packaged for Mac App Store
Summary
Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC permissions via copying the binary to a tmp folder.
Severity ?
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.0
(semver)
Unaffected: 6.0.0 |
Credits
Karmaz95
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CVE-2025-13324 (GCVE-0-2025-13324)
Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-24 10:16
VLAI?
Title
Lack of Invalidation of Legacy Remote Cluster Invite Tokens After Confirmation
Summary
Mattermost versions 10.11.x <= 10.11.5, 11.0.x <= 11.0.4, 10.12.x <= 10.12.2 fail to invalidate remote cluster invite tokens when using the legacy (version 1) protocol or when the confirming party does not provide a refreshed token, which allows an attacker who has obtained an invite token to authenticate as the remote cluster and perform limited actions on shared channels even after the invitation has been legitimately confirmed.
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.5
(semver)
Affected: 11.0.0 , ≤ 11.0.4 (semver) Affected: 10.12.0 , ≤ 10.12.2 (semver) Unaffected: 11.1.0 Unaffected: 10.11.6 Unaffected: 11.0.5 Unaffected: 10.12.3 |
Credits
daw10
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CVE-2025-13321 (GCVE-0-2025-13321)
Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI?
Title
Mattermost Desktop App logging sensitive information and fails to clear data on server deletion
Summary
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Severity ?
CWE
- CWE-532 - Insertion of Sensitive Information into Log Files
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.0
(semver)
Unaffected: 6.0.0 |
Credits
Doyensec
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CVE-2025-12689 (GCVE-0-2025-12689)
Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI?
Title
DoS in Calls plugin via malformed UTF-8 in WebSocket request
Summary
Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.
Severity ?
6.5 (Medium)
CWE
- CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.0.0 , ≤ 11.0.4
(semver)
Affected: 10.12.0 , ≤ 10.12.2 (semver) Affected: 10.11.0 , ≤ 10.11.6 (semver) Unaffected: 11.1.0 Unaffected: 11.0.5 Unaffected: 10.12.3 Unaffected: 10.11.7 |
Credits
National Security Agency
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CVE-2025-62690 (GCVE-0-2025-62690)
Vulnerability from cvelistv5 – Published: 2025-12-17 12:19 – Updated: 2025-12-17 14:45
VLAI?
Title
Open redirect in error page when link opened in new tab
Summary
Mattermost versions 10.11.x <= 10.11.4 fail to validate redirect URLs on the /error page, which allows an attacker to redirect a victim to a malicious site via a crafted link opened in a new tab.
Severity ?
CWE
- CWE-601 - CWE‑601: URL Redirection to Untrusted Site (“Open Redirect”)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.4
(semver)
Unaffected: 11.1.0 Unaffected: 10.11.5 |
Credits
Mario Puente
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CVE-2025-13352 (GCVE-0-2025-13352)
Vulnerability from cvelistv5 – Published: 2025-12-17 12:11 – Updated: 2025-12-17 16:48
VLAI?
Title
Mattermost GitHub Plugin allows unauthorized GitHub reactions via reaction forwarding hijacking
Summary
Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.
Severity ?
CWE
- CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.6
(semver)
Unaffected: 11.1.0 Unaffected: 10.11.7 |
Credits
Juho Forsén
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CVE-2025-62190 (GCVE-0-2025-62190)
Vulnerability from cvelistv5 – Published: 2025-12-17 12:07 – Updated: 2025-12-17 15:47
VLAI?
Title
CSRF Allows Call Initiation and Message Delivery
Summary
Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 and Mattermost Calls versions <=1.10.0 fail to implement CSRF protection on the Calls widget page which allows an authenticated attacker to initiate calls and inject messages into channels or direct messages via a malicious webpage or crafted link
Severity ?
4.3 (Medium)
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.0.0 , ≤ 11.0.4
(semver)
Affected: 10.12.0 , ≤ 10.12.2 (semver) Affected: 10.11.0 , ≤ 10.11.6 (semver) Unaffected: 11.1.0 Unaffected: 11.0.5 Unaffected: 10.12.3 Unaffected: 10.11.7 |
Credits
DoyenSec
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CVE-2025-13870 (GCVE-0-2025-13870)
Vulnerability from cvelistv5 – Published: 2025-12-02 09:28 – Updated: 2025-12-02 14:38
VLAI?
Title
Unauthorized access and subscription vulnerability in Boards
Summary
Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to
Severity ?
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.4
(semver)
Affected: 10.5.0 , ≤ 10.5.12 (semver) Unaffected: 11.1.0 Unaffected: 10.11.5 Unaffected: 10.5.13 |
Credits
Doyensec
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CVE-2025-12756 (GCVE-0-2025-12756)
Vulnerability from cvelistv5 – Published: 2025-12-01 19:51 – Updated: 2025-12-01 20:02
VLAI?
Title
Insecure Direct Object Reference in Mattermost Boards Plugin Enables Unauthorised Comment Deletion
Summary
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate user permissions when deleting comments in Boards, which allows an authenticated user with the editor role to delete comments created by other users.
Severity ?
4.3 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.0.0 , ≤ 11.0.2
(semver)
Affected: 10.12.0 , ≤ 10.12.1 (semver) Affected: 10.11.0 , ≤ 10.11.4 (semver) Affected: 10.5.0 , ≤ 10.5.12 (semver) Unaffected: 11.1.0 Unaffected: 11.0.3 Unaffected: 10.12.2 Unaffected: 10.11.5 Unaffected: 10.5.13 |
Credits
daynight
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CVE-2025-12421 (GCVE-0-2025-12421)
Vulnerability from cvelistv5 – Published: 2025-11-27 17:47 – Updated: 2025-12-02 04:55
VLAI?
Title
Account Takeover via Code Exchange Endpoint
Summary
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to to verify that the token used during the code exchange originates from the same authentication flow, which allows an authenticated user to perform account takeover via a specially crafted email address used when switching authentication methods and sending a request to the /users/login/sso/code-exchange endpoint. The vulnerability requires ExperimentalEnableAuthenticationTransfer to be enabled (default: enabled) and RequireEmailVerification to be disabled (default: disabled).
Severity ?
9.9 (Critical)
CWE
- CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.0.0 , ≤ 11.0.2
(semver)
Affected: 10.12.0 , ≤ 10.12.1 (semver) Affected: 10.11.0 , ≤ 10.11.4 (semver) Affected: 10.5.0 , ≤ 10.5.12 (semver) Unaffected: 11.1.0 Unaffected: 11.0.3 Unaffected: 10.12.2 Unaffected: 10.11.5 Unaffected: 10.5.13 |
Credits
daw10
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CVE-2025-12559 (GCVE-0-2025-12559)
Vulnerability from cvelistv5 – Published: 2025-11-27 16:36 – Updated: 2025-11-28 15:20
VLAI?
Title
Information Disclosure in Common Teams API
Summary
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to sanitize team email addresses to be visible only to Team Admins, which allows any authenticated user to view team email addresses via the GET /api/v4/channels/{channel_id}/common_teams endpoint
Severity ?
4.3 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.0.0 , ≤ 11.0.2
(semver)
Affected: 10.12.0 , ≤ 10.12.1 (semver) Affected: 10.11.0 , ≤ 10.11.4 (semver) Affected: 10.5.0 , ≤ 10.5.12 (semver) Unaffected: 11.1.0 Unaffected: 11.0.3 Unaffected: 10.12.2 Unaffected: 10.11.5 Unaffected: 10.5.13 |
Credits
hainguyen0207
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CVE-2025-12419 (GCVE-0-2025-12419)
Vulnerability from cvelistv5 – Published: 2025-11-27 15:55 – Updated: 2025-12-02 04:55
VLAI?
Title
Account takeover on OAuth/OpenID-enabled servers
Summary
Mattermost versions 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12, 11.0.x <= 11.0.3 fail to properly validate OAuth state tokens during OpenID Connect authentication which allows an authenticated attacker with team creation privileges to take over a user account via manipulation of authentication data during the OAuth completion flow. This requires email verification to be disabled (default: disabled), OAuth/OpenID Connect to be enabled, and the attacker to control two users in the SSO system with one of them never having logged into Mattermost.
Severity ?
9.9 (Critical)
CWE
- CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.12.0 , ≤ 10.12.1
(semver)
Affected: 10.11.0 , ≤ 10.11.4 (semver) Affected: 10.5.0 , ≤ 10.5.12 (semver) Affected: 11.0.0 , ≤ 11.0.3 (semver) Unaffected: 11.1.0 Unaffected: 10.12.2 Unaffected: 10.11.5 Unaffected: 10.5.13 Unaffected: 11.0.4 |
Credits
daw10
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CVE-2025-55074 (GCVE-0-2025-55074)
Vulnerability from cvelistv5 – Published: 2025-11-18 15:23 – Updated: 2025-11-18 21:03
VLAI?
Title
Channel member objects leak read status
Summary
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects
Severity ?
CWE
- CWE-1426 - Improper Validation of Generative AI Output
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.3
(semver)
Affected: 10.5.0 , ≤ 10.5.11 (semver) Unaffected: 11.0.0 Unaffected: 10.11.4 Unaffected: 10.5.12 |
Credits
Juho Forsén
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CVE-2025-11794 (GCVE-0-2025-11794)
Vulnerability from cvelistv5 – Published: 2025-11-14 10:45 – Updated: 2025-12-01 15:36
VLAI?
Title
Password hash and MFA secret returned in user email verification endpoint
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
Severity ?
4.9 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.3
(semver)
Affected: 10.5.0 , ≤ 10.5.11 (semver) Affected: 10.12.0 , ≤ 10.12.0 (semver) Unaffected: 11.0.0 Unaffected: 10.11.4 Unaffected: 10.5.12 Unaffected: 10.12.1 |
Credits
Christian Iwata Nilsson
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CVE-2025-55073 (GCVE-0-2025-55073)
Vulnerability from cvelistv5 – Published: 2025-11-14 08:03 – Updated: 2025-11-14 15:46
VLAI?
Title
MS Teams plugin OAuth allows editing arbitrary posts
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.
Severity ?
5.4 (Medium)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.3
(semver)
Affected: 10.5.0 , ≤ 10.5.11 (semver) Affected: 10.12.0 , ≤ 10.12.0 (semver) Unaffected: 11.0.0 Unaffected: 10.11.4 Unaffected: 10.5.12 Unaffected: 10.12.1 |
Credits
Juho Forsén
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CVE-2025-55070 (GCVE-0-2025-55070)
Vulnerability from cvelistv5 – Published: 2025-11-14 08:02 – Updated: 2025-11-14 15:47
VLAI?
Title
Lack of MFA enforcement in WebSocket connections
Summary
Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
Severity ?
6.5 (Medium)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
<11 , ≤ <11
(semver)
Unaffected: 11.0.0 |
Credits
Agniva De Sarker
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CVE-2025-41436 (GCVE-0-2025-41436)
Vulnerability from cvelistv5 – Published: 2025-11-14 08:00 – Updated: 2025-11-14 15:48
VLAI?
Title
Unauthorized access to archived channel content via threads interface
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
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
<11.0 , ≤ <11.0
(semver)
Unaffected: 11.0.0 |
Credits
BhaRat (hackit_bharat)
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CVE-2025-11776 (GCVE-0-2025-11776)
Vulnerability from cvelistv5 – Published: 2025-11-14 07:58 – Updated: 2025-11-14 15:49
VLAI?
Title
Guest user can discover archived public channels
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
Severity ?
4.3 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
<11 , ≤ <11
(semver)
Unaffected: 11.0.0 |
Credits
lordwillmore
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CVE-2025-59480 (GCVE-0-2025-59480)
Vulnerability from cvelistv5 – Published: 2025-11-13 17:32 – Updated: 2025-11-13 18:02
VLAI?
Title
Inadequate validation of SSO redirect credentials permits credential theft
Summary
Mattermost Mobile Apps versions <=2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses
Severity ?
6.1 (Medium)
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 2.32.0
(semver)
Unaffected: 2.33.0 |
Credits
Doyensec
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CVE-2025-11777 (GCVE-0-2025-11777)
Vulnerability from cvelistv5 – Published: 2025-11-13 17:32 – Updated: 2025-11-13 18:01
VLAI?
Title
Cross-team channel membership access
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
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.3
(semver)
Affected: 10.5.0 , ≤ 10.5.11 (semver) Unaffected: 11.0.0 Unaffected: 10.11.4 Unaffected: 10.5.12 |
Credits
Xiangyu Guo
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CVE-2025-55035 (GCVE-0-2025-55035)
Vulnerability from cvelistv5 – Published: 2025-10-16 15:18 – Updated: 2025-10-16 16:28
VLAI?
Title
Mattermost Desktop DoS when user has basic authentication server configured
Summary
Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.
Severity ?
6.1 (Medium)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.0.13
(semver)
Unaffected: 5.13.1.0 |
Credits
Doyensec
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CVE-2025-58073 (GCVE-0-2025-58073)
Vulnerability from cvelistv5 – Published: 2025-10-16 08:44 – Updated: 2025-10-22 03:55
VLAI?
Title
Arbitrary Mattermost Team can be joined by manipulating the OAuth state
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.
Severity ?
8.1 (High)
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.1
(semver)
Affected: 10.10.0 , ≤ 10.10.2 (semver) Affected: 10.5.0 , ≤ 10.5.10 (semver) Unaffected: 10.12.0 Unaffected: 10.11.2 Unaffected: 10.10.3 Unaffected: 10.5.11 |
Credits
DoyenSec
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CVE-2025-41410 (GCVE-0-2025-41410)
Vulnerability from cvelistv5 – Published: 2025-10-16 08:39 – Updated: 2025-10-16 14:00
VLAI?
Title
Slack import bypasses email verification for team access controls
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
Severity ?
5.4 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.10.0 , ≤ 10.10.2
(semver)
Affected: 10.5.0 , ≤ 10.5.10 (semver) Affected: 10.11.0 , ≤ 10.11.2 (semver) Unaffected: 10.12.0 Unaffected: 10.10.3 Unaffected: 10.5.11 Unaffected: 10.11.3 |
Credits
daw10
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CVE-2025-10545 (GCVE-0-2025-10545)
Vulnerability from cvelistv5 – Published: 2025-10-16 08:24 – Updated: 2025-10-16 14:14
VLAI?
Title
Guest user can add unauthorized team users to private channels
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
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.5.0 , ≤ 10.5.10
(semver)
Affected: 10.11.0 , ≤ 10.11.2 (semver) Unaffected: 10.12.0 Unaffected: 10.5.11 Unaffected: 10.11.3 |
Credits
lordwillmore
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CVE-2025-58075 (GCVE-0-2025-58075)
Vulnerability from cvelistv5 – Published: 2025-10-16 08:20 – Updated: 2025-10-22 03:55
VLAI?
Title
Arbitrary Mattermost Team can be joined by manipulating the SAML RelayState
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
Severity ?
8.1 (High)
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.11.0 , ≤ 10.11.1
(semver)
Affected: 10.10.0 , ≤ 10.10.2 (semver) Affected: 10.5.0 , ≤ 10.5.10 (semver) Unaffected: 10.12.0 Unaffected: 10.11.2 Unaffected: 10.10.3 Unaffected: 10.5.11 |
Credits
DoyenSec
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CVE-2025-54499 (GCVE-0-2025-54499)
Vulnerability from cvelistv5 – Published: 2025-10-16 08:17 – Updated: 2025-10-16 13:51
VLAI?
Title
Insecure string comparison enables timing attacks
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
Severity ?
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.5.0 , ≤ 10.5.10
(semver)
Affected: 10.11.0 , ≤ 10.11.2 (semver) Unaffected: 10.12.0 Unaffected: 10.5.11 Unaffected: 10.11.3 |
Credits
DoyenSec
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CVE-2025-41443 (GCVE-0-2025-41443)
Vulnerability from cvelistv5 – Published: 2025-10-16 08:10 – Updated: 2025-10-29 08:06
VLAI?
Title
Guest user can discover active public channels
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
Severity ?
4.3 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Mattermost | Mattermost |
Affected:
10.5.0 , ≤ 10.5.12
(semver)
Affected: 10.11.0 , ≤ 10.11.2 (semver) Unaffected: 10.12.0 Unaffected: 10.5.13 Unaffected: 10.11.3 |
Credits
lordwillmore
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