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)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.388 (98.5th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-26072: held from 0.388 to 0.388.

EPSS over last 30 days · oldest: 0.388 · newest: 0.388 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.