CVE-2024-21838

Name: CVE-2024-21838
Creator: NVD / NIST
Published: 2024-03-05T03:15:06.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2024-21838 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Improper neutralization of special elements in output (CWE-74) used by the email generation feature of the Command Centre Server could lead to HTML code injection in emails generated by Command Centre. This issue affects: Gallagher Command Centre 9.00 prior to vEL9.00.1774 (MR2), 8.90 prior to vEL8.90.1751 (MR3), 8.80 prior to vEL8.80.1526 (MR4), 8.70 prior to vEL8.70.2526 (MR6), all version of 8.60 and prior. . EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

Improper neutralization of special elements in output (CWE-74) used by the email generation feature of the Command Centre Server could lead to HTML code injection in emails generated by Command Centre. This issue affects: Gallagher Command Centre 9.00 prior to vEL9.00.1774 (MR2), 8.90 prior to vEL8.90.1751 (MR3), 8.80 prior to vEL8.80.1526 (MR4), 8.70 prior to vEL8.70.2526 (MR6), all version of 8.60 and prior.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.30%

22.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gallagher	Command Centre	<= 8.60
Gallagher	Command Centre	>= 8.70, < 8.70.2526
Gallagher	Command Centre	>= 8.80, < 8.80.1526
Gallagher	Command Centre	>= 8.90, < 8.90.1751
Gallagher	Command Centre	>= 9.00, < 9.00.1774

References

https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2024-21838Vendor Advisory
https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2024-21838Vendor Advisory

Timeline

Published: Mar 5, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-21838?

How severe is CVE-2024-21838?

CVE-2024-21838 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21838?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-21838?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST