How severe is CVE-2023-7321?

CVE-2023-7321 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-7321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-7321?

CVE-2023-7321 affects Nagios Log Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-7321?

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

Does CVE-2023-7321 have an EU (EUVD) identifier?

Yes. CVE-2023-7321 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60048.

When was CVE-2023-7321 published?

CVE-2023-7321 was published on 2025-10-30 and last updated on 2026-06-17.

CVE-2023-7321

CVE-2023-7321 is a medium-severity vulnerability in Nagios Log Server with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-60048
Weakness: CWE-79
Affected product: Nagios Log Server
Published: 2025-10-30
Last modified: 2026-06-17

Description

Nagios Log Server versions prior to 2.1.14 are vulnerable to cross-site scripting (XSS) via the Snapshots Page. Untrusted log content was not safely encoded for the output context, allowing attacker-controlled data present in logs to execute script in the victim’s browser within the application origin.

Frequently asked questions

What is CVE-2023-7321?: Nagios Log Server versions prior to 2.1.14 are vulnerable to cross-site scripting (XSS) via the Snapshots Page. Untrusted log content was not safely encoded for the output context, allowing attacker-controlled data present in logs to execute script in the victim’s browser within the application origin.
How severe is CVE-2023-7321?: CVE-2023-7321 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-7321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-7321?: CVE-2023-7321 affects Nagios Log Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-7321?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-7321 have an EU (EUVD) identifier?: Yes. CVE-2023-7321 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60048.
When was CVE-2023-7321 published?: CVE-2023-7321 was published on 2025-10-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*

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