CVE-2021-43944Network attack vector

Administrator code execution via email template injection

Published Mar 8, 2022 · Updated Oct 4, 2024

Template injection in Atlassian Jira Server and Data Center before 8.13.15 and 8.14.0 through 8.20.2 allows remote authenticated users to run code. Atlassian has not published the template-processing locus or the operation that evaluates administrator-controlled template content as code. System-administrator permissions and access to Email Templates are required; successful exploitation executes arbitrary code in the Jira server context.

CVSS severity7.2
High
EPSS probability2.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Template injection in Atlassian Jira Server and Data Center before 8.13.15 and 8.14.0 through 8.20.2 allows remote authenticated users to run code. Atlassian has not published the template-processing locus or the operation that evaluates administrator-controlled template content as code. System-administrator permissions and access to Email Templates are required; successful exploitation executes arbitrary code in the Jira server context.

The record

CVE
CVE-2021-43944
Published
Mar 8, 2022
Updated
Oct 4, 2024
Vendor
Atlassian
Product
Jira Server
Classifications
CWE-94, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <8.13.15
  2. Affected versionversion=8.14.0 <8.20.3
  3. Affected versionversion=8.14.0 <unspecified
  4. Affected versionversion=unspecified <8.13.15
  5. Affected versionversion=unspecified <8.20.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Atlassian · Jira Serverversion=0 <8.13.15; version=8.14.0 <8.20.3; version=8.14.0 <unspecified; version=unspecified <8.13.15; version=unspecified <8.20.3
Atlassian · Jira Data Centerversion=0 <8.13.15; version=8.14.0 <8.20.3; version=8.14.0 <unspecified; version=unspecified <8.13.15; version=unspecified <8.20.3

Published CVSS scores

6.5NISTAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NISTCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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