SSRF in Atlassian Confluence Data Center
CVE-2021-26072
The WidgetConnector plugin in Confluence Server and Confluence Data Center before version 5.8.6 allowed remote attackers to manipulate the content of internal network resources via a blind Server-Side Request Forgery (SSRF) vulnerability.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.388 (98.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Atlassian Confluence Data Center — versions unspecified
- Atlassian Confluence_data_center
- Atlassian Confluence Server — versions unspecified
- Atlassian Confluence_server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@atlassian.com (Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26072?
- CVE-2021-26072 is a medium-severity vulnerability in Atlassian Confluence Data Center, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2021-04-01.
- How severe is CVE-2021-26072?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-26072 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.