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Ubuntu 22.04 CiviCRM Important JavaScript Execution Risk USN-8242-1

ubuntu
Calendar Grey May 7, 2026
Dist Ubuntu Esm H88
CiviCRM on Ubuntu may run malicious JavaScript due to insufficient escaping, risking user data. Update recommended.
CiviCRM could be made to run malicious JavaScript in the user's browser if it received specially crafted input.

Summary

CiviCRM could be made to run malicious JavaScript in the user's browser

if it received specially crafted input.

Software Description:

- civicrm: Constituent relationship management solution

Details:

Takuya Aramaki discovered that Smarty, vendored in CiviCRM, did not

properly escape JavaScript code. An attacker could possibly use this issue

to conduct a cross-site scripting attack.

Topics%20covered

Topics Covered

security advisory cross site scripting Ubuntu important malicious input civicrm

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
  civicrm-common                  5.33.2+dfsg1-1ubuntu1+esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  civicrm-common                  5.21.2+dfsg-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  civicrm-common                  4.7.30+dfsg-1ubuntu1+esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  civicrm-common                  4.7.1+dfsg-2ubuntu1+esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8242-1

CVE-2023-28447

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8242-1

Topics%20covered

Topics Covered

security advisory cross site scripting Ubuntu important malicious input civicrm

Package Information

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