Mattermost up to 10.4.1 Archived Channel authorization

CVSS Meta Temp Score
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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 9.11.7/10.1.3/10.2.2/10.3.2/10.4.1. It has been declared as problematic. This impacts an unknown function of the component Archived Channel Handler. Such manipulation leads to authorization. This vulnerability is traded as CVE-2025-24526. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mattermost up to 9.11.7/10.1.3/10.2.2/10.3.2/10.4.1. Affected by this issue is some unknown processing of the component Archived Channel Handler. The manipulation 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. CVE summarizes:

Mattermost versions 10.1.x <= 10.1.3, 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to restrict channel export of archived channels when the "Allow users to view archived channels" is disabled which allows a user to export channel contents when they shouldn't have access to it

The weakness was shared by Eva Sarafianou. The advisory is shared for download at mattermost.com. This vulnerability is handled as CVE-2025-24526 since 02/18/2025. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 9.11.8, 10.1.4, 10.2.3, 10.3.3, 10.4.2 or 10.5.0 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: 🔍

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: 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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 9.11.8/10.1.4/10.2.3/10.3.3/10.4.2/10.5.0

Timelineinfo

02/18/2025 🔍
02/24/2025 +6 days 🔍
02/24/2025 +0 days 🔍
02/24/2025 +0 days 🔍

Sourcesinfo

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

CVE: CVE-2025-24526 (🔍)
GCVE (CVE): GCVE-0-2025-24526
GCVE (VulDB): GCVE-100-296624

Entryinfo

Created: 02/24/2025 10:04
Changes: 02/24/2025 10:04 (64)
Complete: 🔍
Cache ID: 216::103

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