VDB-290900 · CVE-2025-22449 · Nessus 214906

Mattermost up to 9.11.5 allow_open_invite authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.7	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Mattermost up to 9.11.5. Impacted is an unknown function. Such manipulation of the argument allow_open_invite leads to authorization. This vulnerability is referenced as CVE-2025-22449. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mattermost up to 9.11.5. Affected by this issue is an unknown functionality. The manipulation of the argument allow_open_invite with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is confidentiality, and integrity. CVE summarizes:

Mattermost versions 9.11.x <= 9.11.5 fail to enforce invite permissions, which allows team admins, with no permission to invite users to their team, to invite users by updating the "allow_open_invite" field via making their team public.

The weakness was published by Omar Ahmed. The advisory is shared for download at mattermost.com. This vulnerability is handled as CVE-2025-22449 since 01/08/2025. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 214906 (SUSE SLES15 / openSUSE 15 Security Update : govulncheck-vulndb (SUSE-SU-2025:0297-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.11.6 or 10.3.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (214906). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Groupware Software

Name

Mattermost

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.8
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 3.8
CNA Vector (Mattermost): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 214906
Nessus Name: SUSE SLES15 / openSUSE 15 Security Update : govulncheck-vulndb (SUSE-SU-2025:0297-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 9.11.6/10.3.0

Timelineinfo

01/08/2025 🔍
01/09/2025 +1 days 🔍
01/09/2025 +0 days 🔍
09/30/2025 +263 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Omar Ahmed
Status: Confirmed

CVE: CVE-2025-22449 (🔍)
GCVE (CVE): GCVE-0-2025-22449
GCVE (VulDB): GCVE-100-290900

Entryinfo

Created: 01/09/2025 09:18
Updated: 09/30/2025 00:18
Changes: 01/09/2025 09:18 (64), 02/04/2025 12:49 (2), 09/30/2025 00:18 (1)
Complete: 🔍
Cache ID: 216::103