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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 41.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 41.22% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- atlassian/confluence data center · atlassian/confluence server
- Source
- security@atlassian.com
EPSS moved from 41.2% on 21 October 2026 to 41.2% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://jira.atlassian.com/browse/CONFSERVER-61399Issue Tracking, Patch, Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-61399Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.