CVE-2019-3403
The /rest/api/2/user/picker rest resource in Jira before version 7.13.3, from version 8.0.0 before version 8.0.4, and from version 8.1.0 before version 8.1.1 allows remote attackers to enumerate usernames via an incorrect authorisation check.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 51.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
The /rest/api/2/user/picker rest resource in Jira before version 7.13.3, from version 8.0.0 before version 8.0.4, and from version 8.1.0 before version 8.1.1 allows remote attackers to enumerate usernames via an incorrect authorisation check.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 51.28% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- atlassian/jira · atlassian/jira server
- Source
- security@atlassian.com
EPSS moved from 51.3% on 18 October 2026 to 51.3% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://jira.atlassian.com/browse/JRASERVER-69242Issue Tracking, Vendor Advisory
- https://jira.atlassian.com/browse/JRASERVER-69242Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.