CVE-2020-4028
Versions before 8.9.1, Various resources in Jira responded with a 404 instead of redirecting unauthenticated users to the login page, in some situations this may have allowed unauthorised attackers to determine if certain resources exist or not through…
Does this matter?
Lower severity and a low EPSS score (0.86%). Track it; it rarely justifies an emergency change on its own.
Description
Versions before 8.9.1, Various resources in Jira responded with a 404 instead of redirecting unauthenticated users to the login page, in some situations this may have allowed unauthorised attackers to determine if certain resources exist or not through an Information Disclosure vulnerability.
- 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
- 0.86% probability · 58th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-203
- Affected
- atlassian/jira · atlassian/jira software data center
- Source
- security@atlassian.com
EPSS 0.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://jira.atlassian.com/browse/JRASERVER-71175Issue Tracking, Vendor Advisory
- https://jira.atlassian.com/browse/JRASERVER-71175Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.