How severe is CVE-2024-21838?

CVE-2024-21838 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-21838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21838?

CVE-2024-21838 affects Gallagher Command Centre. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21838?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21838 have an EU (EUVD) identifier?

Yes. CVE-2024-21838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19450.

When was CVE-2024-21838 published?

CVE-2024-21838 was published on 2024-03-05 and last updated on 2026-06-17.

CVE-2024-21838

CVE-2024-21838 is a medium-severity vulnerability in Gallagher Command Centre with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19450
Weakness: CWE-79
Affected product: Gallagher Command Centre
Published: 2024-03-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-21838?: 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.
How severe is CVE-2024-21838?: CVE-2024-21838 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-21838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21838?: CVE-2024-21838 affects Gallagher Command Centre. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21838 have an EU (EUVD) identifier?: Yes. CVE-2024-21838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19450.
When was CVE-2024-21838 published?: CVE-2024-21838 was published on 2024-03-05 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*

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