CVE-2021-26072

Name: CVE-2021-26072
Creator: NVD / NIST
Published: 2021-04-01T19:15:13.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 38.84%

Last modified Jun 17, 2026

CVE-2021-26072 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 38.84% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

38.84%

98.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Atlassian	Confluence Data Center	< 5.8.6
Atlassian	Confluence Server	< 5.8.6

References

https://jira.atlassian.com/browse/CONFSERVER-61399Issue Tracking, Patch, Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-61399Issue Tracking, Patch, Vendor Advisory

Timeline

Published: Apr 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26072?

How severe is CVE-2021-26072?

CVE-2021-26072 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 38.84% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26072?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26072?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST