How severe is CVE-2025-66580?

CVE-2025-66580 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66580 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66580?

CVE-2025-66580 affects Openagentplatform Dive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66580?

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-2025-66580 have an EU (EUVD) identifier?

Yes. CVE-2025-66580 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204564.

When was CVE-2025-66580 published?

CVE-2025-66580 was published on 2025-12-19 and last updated on 2026-06-17.

CVE-2025-66580

CVE-2025-66580 is a critical-severity vulnerability in Openagentplatform Dive with a CVSS 3.x base score of 9.6. 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: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204564
Weakness: CWE-79
Affected product: Openagentplatform Dive
Published: 2025-12-19
Last modified: 2026-06-17

Description

Dive is an open-source MCP Host Desktop Application that enables integration with function-calling LLMs. A critical Stored Cross-Site Scripting (XSS) vulnerability exists in versions prior to 0.11.1 in the Mermaid diagram rendering component. The application allows the execution of arbitrary JavaScript via `javascript:`. An attacker can exploit this to inject a malicious Model Context Protocol (MCP) server configuration, leading to Remote Code Execution (RCE) on the victim's machine when the node is clicked. Version 0.11.1 fixes the issue.

Frequently asked questions

What is CVE-2025-66580?: Dive is an open-source MCP Host Desktop Application that enables integration with function-calling LLMs. A critical Stored Cross-Site Scripting (XSS) vulnerability exists in versions prior to 0.11.1 in the Mermaid diagram rendering component. The application allows the execution of arbitrary JavaScript via `javascript:`. An attacker can exploit this to inject a malicious Model Context Protocol (MCP) server configuration, leading to Remote Code Execution (RCE) on the victim's machine when the node is clicked. Version 0.11.1 fixes the issue.
How severe is CVE-2025-66580?: CVE-2025-66580 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66580 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66580?: CVE-2025-66580 affects Openagentplatform Dive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66580?: 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-2025-66580 have an EU (EUVD) identifier?: Yes. CVE-2025-66580 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204564.
When was CVE-2025-66580 published?: CVE-2025-66580 was published on 2025-12-19 and last updated on 2026-06-17.

References

https://github.com/OpenAgentPlatform/Dive/security/advisories/GHSA-xv8m-365j-x6h2

Affected products (1)

cpe:2.3:a:openagentplatform:dive:*:*:*:*:*:*:*:*

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