UpHeron
All vulnerabilities

Servers and applications

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.

Severity
Medium 5.3
Published
20 Jul 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.5.14, 8.13.6, 8.16.1
Sources
NVD

Affected software

SoftwareAffected versions
JiraServers and applications · cpe:a:atlassian:jira
  • Every version before 8.5.14
JiraServers and applications · cpe:a:atlassian:jira_data_center
  • From 8.6.0 before 8.13.6
  • From 8.14.0 before 8.16.1
JiraServers and applications · cpe:a:atlassian:jira_server
  • From 8.6.0 before 8.13.6
  • From 8.14.0 before 8.16.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-26081
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-26081