Is CVE-2021-26072 in the CISA KEV catalog?

No. CVE-2021-26072 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-26072?

CVE-2021-26072 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-26072?

CVE-2021-26072 has an EPSS score of 38.84% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-26072?

Upgrade confluence data center to 5.8.6 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-26072

MEDIUMEPSS 98th pctl

4.3

CVSS v3

NVD

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.

CWE-918Server-Side Request Forgery (SSRF)

How to fix

Remediation Available

confluence data centerNVD

Affected:< 5.8.6Fixed in:5.8.6CVE-2021-26072derived from NVD

confluence serverNVD

Affected:< 5.8.6Fixed in:5.8.6CVE-2021-26072derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

38.84%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Patch1

jira.atlassian.com

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-21893	High	8.2	100%	KEV + Ransom	-
CVE-2021-40438	Critical	9.0	100%	KEV	Fix
CVE-2021-34473	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-26855	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-41040	High	8.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.