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    CVE-2021-26081

    REST API in Atlassian Jira Server and Jira Data Center before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1 allows remote attackers to enumerate usernames via a Sensitive Data Exposure vulnerability in the `/rest/api/latest/user/avatar/temporary` endpoint.

    Published:Jul 20, 2021
    Last Modified:Nov 21, 2024
    EPS:Jul 20, 2021
    EPSS Score:0.00379
    CVSS Score:5.3

    Affected Products

    Vendor
    Atlassian
    Product
    Data Center
    Vendor
    Atlassian
    Product
    Jira
    Vendor
    Atlassian
    Product
    Jira Data Center
    Vendor
    Atlassian
    Product
    Jira Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2021-41312 (CVSS 7.5) — Affected versions of Atlassian Jira Server and Data Center allow a remote attacker who has had their access re…
    CVE-2021-41304 (CVSS 6.1) — Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to inject arbitrar…
    CVE-2021-39125 (CVSS 5.3) — Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to discover the us…
    CVE-2019-20101 (CVSS 5.3) — Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to view whitelist …
    CVE-2021-39118 (CVSS 5.3) — Affected versions of Atlassian Jira Server and Data Center allow remote attackers to discover the usernames an…
    CVE-2021-39123 (CVSS 7.5) — Affected versions of Atlassian Jira Server and Data Center allow unauthenticated remote attackers to impact th…
    CVE-2021-39124 (CVSS 4.3) — The Cross-Site Request Forgery (CSRF) failure retry feature of Atlassian Jira Server and Data Center before ve…

    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