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CVE-2021-26072

47
FAUCET Score

CVE-2021-26072 is a blind Server-Side Request Forgery (SSRF) vulnerability in the WidgetConnector plugin of Atlassian Confluence Server and Data Center versions prior to 5.8.6. This medium-severity vulnerability (CVSS 4.3) allows authenticated remote attackers to manipulate internal network resources, potentially leading to information disclosure. While no active exploitation or Metasploit modules are reported, Nuclei templates exist, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.8.6CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
< 5.8.6CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
38.84%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-26072 · Jun 14, 2021
This CVE's current EPSS score of 0.3885 is in the 100th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jira.atlassian.com / browse/CONFSERVER-61399
Issue TrackingPatchVendor Advisory