CVE-2026-22892

Mattermost versions 11.1.x = 11.1.2, 10.11.x = 10.11.9, 11.2.x = 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have acce...

CVE-2026-22892 Insufficient Authorization in Mattermost Jira Plugin Allows Unauthorized Access to Post Attachments

Mattermost versions 11.1.x = 11.1.2, 10.11.x = 10.11.9, 11.2.x = 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have acce...

CVE-2026-22892 Insufficient Authorization in Mattermost Jira Plugin Allows Unauthorized Access to Post Attachments

Mattermost versions 11.1.x = 11.1.2, 10.11.x = 10.11.9, 11.2.x = 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have acce...

CVE-2026-22892

Mattermost versions 11.1.x up to 11.1.2, 10.11.x up to 10.11.9, and 11.2.x up to 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts. An authenticated attacker with access to the Jira plugin can read post content and attachments from channels they do not have ...

PT-2026-3781

Name of the Vulnerable Software and Affected Versions WorklogPRO - Timesheets for Jira versions prior to 4.23.6-jira10 WorklogPRO - Timesheets for Jira versions prior to 4.23.5-jira9 Description The WorklogPRO - Timesheets for Jira plugin contains a flaw that allows the injection of arbitrary HTM...

CVE-2025-57681

The WorklogPRO - Timesheets for Jira plugin in Jira Data Center before version 4.23.6-jira10 and before version 4.23.5-jira9 allows users and attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting XSS vulnerability. The vulnerability is exploited via a specially crafted paylo...

SUSE CVE-2025-14273

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 with the Jira plugin enabled and Mattermost Jira plugin versions =4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows ...

GO-2026-4275 Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm in github.com/mattermost/mattermost-plugin-jira

Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm in github.com/mattermost/mattermost-plugin-jira. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is...

CVE-2023-49653

Jenkins Jira Plugin 3.11 and earlier does not set the appropriate context for credentials lookup, allowing attackers with Item/Configure permission to access and capture credentials they are not entitled to...

Mattermost Server 10.11.x < 10.11.8 / 10.12.x < 10.12.4 / 11.0.x <= 11.0.6 / 11.1.x <= 11.1.1 Improper Authentication (MMSA-2025-00555)

The version of Mattermost Server installed on the remote host is 10.11.x prior to 10.11.8, 10.12.x prior to 10.12.4, 11.0.x prior to 11.0.6, or 11.1.x prior to 11.1.1, and is, therefore, affected by an improper authentication vulnerability: - Mattermost versions 11.1.x = 11.1.0, 11.0.x = 11.0.5,...

CVE-2025-64641

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 affecte...

CVE-2025-13767

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 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachmen...

GHSA-VWW6-79RV-3J4X Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin

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 affecte...

GHSA-FMQF-PMCM-8CX9 Mattermost doesn't validate user channel membership when attaching Mattermost posts as comments to Jira issues

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 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachmen...

Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin

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 affecte...

CVE-2025-64641

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 affecte...

CVE-2025-13767

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 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachmen...

CVE-2025-64641 Mattermost Jira plugin crafted action leaks Jira issue details

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 affecte...

CVE-2025-64641 Mattermost Jira plugin crafted action leaks Jira issue details

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 affecte...

CVE-2025-64641 Mattermost Jira plugin crafted action leaks Jira issue details

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 affecte...