CVE-2025-64641 - Vulnerability Details - OpenCVE

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

Update Mattermost to versions 11.2.0, 11.1.1, 11.0.6, 10.12.4, 10.11.8 or higher.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://mattermost.com/security-updates

History

Wed, 24 Dec 2025 17:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 24 Dec 2025 08:15:00 +0000

Type	Values Removed	Values Added
Description		Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
Title		Mattermost Jira plugin crafted action leaks Jira issue details
Weaknesses		CWE-863
References		https://mattermost.com/security-updates
Metrics		cvssV3_1 `{'score': 4.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-12-24T08:02:55.476Z

Updated: 2025-12-24T16:35:17.618Z

Reserved: 2025-11-26T11:34:02.680Z

Link: CVE-2025-64641

Vulnrichment

Updated: 2025-12-24T16:35:10.502Z

NVD

Status : Received

Published: 2025-12-24T08:15:46.487

Modified: 2025-12-24T08:15:46.487

Link: CVE-2025-64641

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-863

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