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    CVE-2025-8285

    Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to create channel subscription without proper access to the channel via API call to the create channel subscription endpoint.

    Published:Aug 11, 2025
    Last Modified:Sep 24, 2025
    EPS:Aug 11, 2025
    EPSS Score:0.00042
    CVSS Score:4

    Affected Products

    Vendor
    Mattermost
    Product
    Confluence
    Vendor
    Mattermost
    Product
    Mattermost

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2025-54458 (CVSS 5) — Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the Confluence space whic…
    CVE-2025-53910 (CVSS 4) — Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows …
    CVE-2025-53857 (CVSS 3.7) — Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows …
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    CVE-2025-52931 (CVSS 7.5) — Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to …
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High