How severe is CVE-2024-42330?

CVE-2024-42330 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-42330 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42330?

CVE-2024-42330 affects Zabbix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42330?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-42330 have an EU (EUVD) identifier?

Yes. CVE-2024-42330 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39876.

When was CVE-2024-42330 published?

CVE-2024-42330 was published on 2024-11-27 and last updated on 2026-06-17.

CVE-2024-42330

CVE-2024-42330 is a critical-severity vulnerability in Zabbix with a CVSS 3.x base score of 9.1. 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-134.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39876
Weakness: CWE-134
Affected product: Zabbix
Published: 2024-11-27
Last modified: 2026-06-17

Description

The HttpRequest object allows to get the HTTP headers from the server's response after sending the request. The problem is that the returned strings are created directly from the data returned by the server and are not correctly encoded for JavaScript. This allows to create internal strings that can be used to access hidden properties of objects.

Frequently asked questions

What is CVE-2024-42330?: The HttpRequest object allows to get the HTTP headers from the server's response after sending the request. The problem is that the returned strings are created directly from the data returned by the server and are not correctly encoded for JavaScript. This allows to create internal strings that can be used to access hidden properties of objects.
How severe is CVE-2024-42330?: CVE-2024-42330 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-42330 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42330?: CVE-2024-42330 affects Zabbix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42330?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-42330 have an EU (EUVD) identifier?: Yes. CVE-2024-42330 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39876.
When was CVE-2024-42330 published?: CVE-2024-42330 was published on 2024-11-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*

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