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MEDIUM · 5.3

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...

Vulnerability Description

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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
AtlassianData Center< 8.5.14
AtlassianJira< 8.5.14
AtlassianJira Data Center>= 8.6.0, < 8.13.6
AtlassianJira Server>= 8.6.0, < 8.13.6

References

FAQ

What is CVE-2021-26081?

CVE-2021-26081 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...

How severe is CVE-2021-26081?

CVE-2021-26081 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26081?

Check the references section above for vendor advisories and patch information. Affected products include: Atlassian Data Center, Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server.