VDB-306061 · CVE-2025-41423 · GCVE-0-2025-41423

Mattermost up to 9.11.10/10.4.2/10.5.0 API Endpoint ignore-thread 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.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Mattermost up to 9.11.10/10.4.2/10.5.0. It has been rated as problematic. This affects an unknown function of the file /plugins/playbooks/api/v0/signal/keywords/ignore-thread of the component API Endpoint. This manipulation causes authorization. This vulnerability is handled as CVE-2025-41423. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Mattermost up to 9.11.10/10.4.2/10.5.0. It has been declared as problematic. Affected by this vulnerability is an unknown function of the file /plugins/playbooks/api/v0/signal/keywords/ignore-thread of the component API Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate permissions for the API endpoint /plugins/playbooks/api/v0/signal/keywords/ignore-thread, allowing any user or attacker to delete posts containing actions created by the Playbooks bot, even without channel access or appropriate permissions.

The weakness was released by Tobias Weisshaar. The advisory is shared at mattermost.com. This vulnerability is known as CVE-2025-41423 since 04/22/2025. The exploitation appears to be difficult. The attack can be launched remotely. Technical details are known, but no exploit is available.

Upgrading to version 9.11.11, 10.4.3, 10.5.1 or 10.6.0 eliminates this vulnerability.

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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: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 3.1
CNA Vector (Mattermost): 🔍

CVSSv2info

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 9.11.11/10.4.3/10.5.1/10.6.0

Timelineinfo

04/22/2025 🔍
04/24/2025 +2 days 🔍
04/24/2025 +0 days 🔍
09/30/2025 +158 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Tobias Weisshaar
Status: Confirmed

CVE: CVE-2025-41423 (🔍)
GCVE (CVE): GCVE-0-2025-41423
GCVE (VulDB): GCVE-100-306061

Entryinfo

Created: 04/24/2025 10:23
Updated: 09/30/2025 01:34
Changes: 04/24/2025 10:23 (65), 04/24/2025 14:31 (1), 09/30/2025 01:34 (11)
Complete: 🔍
Cache ID: 216::103