VULNERABILITY INTELLIGENCE
CVE-2021-26081
CVSS score5.3 MEDIUM
EPSS probability1.18%
CISA KEVNot currently listed
Published2021-07-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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.
Weakness classification
- nvd@nist.gov: NVD-CWE-noinfo
Primary references
- security@atlassian.com — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory