CVE-2019-3403 is an authorization bypass vulnerability affecting Atlassian Jira Server versions before 7.13.3, 8.0.0 through 8.0.3, and 8.1.0. This flaw allows unauthenticated remote attackers to enumerate usernames through the /rest/api/2/user/picker REST resource. Rated Medium severity (CVSS 5.3), it has a low impact on confidentiality and requires no user interaction. While not listed in CISA KEV and with no public Metasploit or ExploitDB modules, a Nuclei template exists, and its high EPSS score suggests a significant likelihood of exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 7.13.3CPE matchmatch criteria | cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* | ||
>= 8.0.0, < 8.0.4CPE matchmatch criteria | cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:* | ||
>= 8.1.0, < 8.1.1CPE matchmatch criteria | cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:* | ||
< 8.0.4CPE match | cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* | ||
< 8.1.1CPE match | cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.