Mattermost up to 9.11.17/10.5.8/10.8.3/10.9.2 restore missing authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Mattermost up to 9.11.17/10.5.8/10.8.3/10.9.2. This vulnerability affects unknown code of the file /api/v4/teams/:teamId/restore. This manipulation causes missing authentication. This vulnerability is tracked as CVE-2025-47870. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mattermost up to 9.11.17/10.5.8/10.8.3/10.9.2 and classified as critical. Affected by this vulnerability is some unknown functionality of the file /api/v4/teams/:teamId/restore. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality. The summary by CVE is:

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fail to sanitize the team invite ID in the POST /api/v4/teams/:teamId/restore endpoint which allows an team admin with no member invite privileges to get the team’s invite id.

The weakness was disclosed by omarAhmed1. The advisory is shared at mattermost.com. This vulnerability is known as CVE-2025-47870 since 07/22/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available.

Upgrading to version 9.11.18, 10.5.9, 10.8.4, 10.9.3 or 10.10.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-1625). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Mattermost Mattermost

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (Mattermost): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Mattermost 9.11.18/10.5.9/10.8.4/10.9.3/10.10.0

Timelineinfo

07/22/2025 CVE reserved
08/21/2025 +30 days Advisory disclosed
08/21/2025 +0 days VulDB entry created
08/21/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: mattermost.com
Researcher: omarAhmed1
Status: Confirmed

CVE: CVE-2025-47870 (🔒)
GCVE (CVE): GCVE-0-2025-47870
GCVE (VulDB): GCVE-100-320917
CERT Bund: WID-SEC-2025-1625 - Mattermost Server und Plugins: Mehrere Schwachstellen

Entryinfo

Created: 08/21/2025 11:41
Updated: 08/21/2025 14:29
Changes: 08/21/2025 11:41 (65), 08/21/2025 13:14 (7), 08/21/2025 14:29 (1)
Complete: 🔍
Cache ID: 216:A08:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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