Mattermost up to 9.5.0 Invite Guest access control

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 was found in Mattermost up to 8.1.8/9.2.4/9.3.0/9.4.1/9.5.0 and classified as critical. Impacted is an unknown function of the component Invite Guest Handler. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2024-1888. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mattermost up to 8.1.8/9.2.4/9.3.0/9.4.1/9.5.0. It has been declared as critical. This vulnerability affects an unknown code of the component Invite Guest Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect integrity. CVE summarizes:

Mattermost fails to check the "invite_guest" permission when inviting guests of other teams to a team, allowing a member with permissions to add other members but not to add guests to add a guest to a team as long as the guest was already a guest in another team of the server

The weakness was presented 02/29/2024 by Eva Sarafianou. The advisory is available at mattermost.com. This vulnerability was named CVE-2024-1888 since 02/26/2024. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 8.1.9, 9.2.5, 9.3.1, 9.4.2 or 9.5.0 eliminates this vulnerability.

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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: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 4.3
CNA Vector (Mattermost, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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 8.1.9/9.2.5/9.3.1/9.4.2/9.5.0

Timelineinfo

02/26/2024 🔍
02/29/2024 +3 days 🔍
02/29/2024 +0 days 🔍
05/12/2025 +438 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Eva Sarafianou
Status: Confirmed

CVE: CVE-2024-1888 (🔍)
GCVE (CVE): GCVE-0-2024-1888
GCVE (VulDB): GCVE-100-255238

Entryinfo

Created: 02/29/2024 09:51
Updated: 05/12/2025 15:53
Changes: 02/29/2024 09:51 (49), 04/03/2024 11:59 (15), 05/12/2025 15:53 (12)
Complete: 🔍
Cache ID: 216::103

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