synced 6 MIN AGO
01 Record

CVE-2021-39125

Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to discover the usernames of users via an enumeration vulnerability in the password reset page. The affected

MediumPUBLISHEDCNA: atlassian
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

02 Description

Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to discover the usernames of users via an enumeration vulnerability in the password reset page. The affected

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.90% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 79.6% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-09-14 06:15Z5 YR AGO
Last updated
2024-10-09 16:42Z2 YR AGO
Reserved
2021-08-16
Assigning CNA
atlassian
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
No CWE assigned
Data version
5.1
Document digest
0bf88a86ed117654f1e356d287d17cfee9904a4bc027d4686f18a905f14c2872

05 Affected products

VendorProductVersionsPlatforms
AtlassianJira Server< 8.5.10, 8.6.0 to < unspecified, < 8.13.1—
AtlassianJira Data Center< 8.5.10, 8.6.0 to < unspecified, < 8.13.1—
atlassianjira_server0 to < 8.5.10, 8.6.0 to < 8.13.1—
atlassianjira_data_center0 to < 8.5.10, 8.6.0 to < 8.13.1—

06 References