How severe is CVE-2023-6366?

CVE-2023-6366 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-6366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6366?

CVE-2023-6366 affects Progress Whatsup Gold. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6366?

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

When was CVE-2023-6366 published?

CVE-2023-6366 was published on 2023-12-14 and last updated on 2026-06-17.

CVE-2023-6366

CVE-2023-6366 is a high-severity vulnerability in Progress Whatsup Gold with a CVSS 3.x base score of 7.6. 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: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Progress Whatsup Gold
Published: 2023-12-14
Last modified: 2026-06-17

Description

In WhatsUp Gold versions released before 2023.1, a stored cross-site scripting (XSS) vulnerability has been identified. It is possible for an attacker to craft a XSS payload and store that value within Alert Center. If a WhatsUp Gold user interacts with the crafted payload, the attacker would be able to execute malicious JavaScript within the context of the victims browser.

Frequently asked questions

What is CVE-2023-6366?: In WhatsUp Gold versions released before 2023.1, a stored cross-site scripting (XSS) vulnerability has been identified. It is possible for an attacker to craft a XSS payload and store that value within Alert Center. If a WhatsUp Gold user interacts with the crafted payload, the attacker would be able to execute malicious JavaScript within the context of the victims browser.
How severe is CVE-2023-6366?: CVE-2023-6366 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-6366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6366?: CVE-2023-6366 affects Progress Whatsup Gold. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-6366 published?: CVE-2023-6366 was published on 2023-12-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:progress:whatsup_gold:*:*:*:*:*:*:*:*

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