Is CVE-2021-43944 in the CISA KEV catalog?

No. CVE-2021-43944 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43944?

CVE-2021-43944 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2021-43944?

CVE-2021-43944 has an EPSS score of 2.23% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43944?

Upgrade jira data center to 8.20.3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-43944

HIGHEPSS 81th pctl

7.2

CVSS v3

NVD

Description

This issue exists to document that a security improvement in the way that Jira Server and Data Center use templates has been implemented. Affected versions of Atlassian Jira Server and Data Center allowed remote attackers with system administrator permissions to execute arbitrary code via Template Injection leading to Remote Code Execution (RCE) in the Email Templates feature. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.

CWE-94Code Injection

How to fix

Remediation Available

jira data centerNVD

Affected:>= 8.14.0, < 8.20.3Fixed in:8.20.3CVE-2021-43944derived from NVD

jira serverNVD

Affected:>= 8.14.0, < 8.20.3Fixed in:8.20.3CVE-2021-43944derived from NVD

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.23%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Vendor Advisory1

jira.atlassian.com

Related Vulnerabilities

Other CWE-94 (Code Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-9841	Critical	9.8	100%	KEV	Fix
CVE-2015-1635	Critical	9.8	100%	KEV	-
CVE-2022-22954	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-22204	Medium	6.8	100%	KEV	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2012-0158	High	8.8	100%	KEV	-

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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.