How severe is CVE-2025-28380?

CVE-2025-28380 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-28380 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-28380?

CVE-2025-28380 affects Openc3 Cosmos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-28380?

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

Does CVE-2025-28380 have an EU (EUVD) identifier?

Yes. CVE-2025-28380 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18280.

When was CVE-2025-28380 published?

CVE-2025-28380 was published on 2025-06-13 and last updated on 2026-06-17.

CVE-2025-28380

CVE-2025-28380 is a medium-severity vulnerability in Openc3 Cosmos with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18280
Weakness: CWE-79
Affected product: Openc3 Cosmos
Published: 2025-06-13
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) vulnerability in OpenC3 COSMOS before v6.0.2 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the URL parameter.

Frequently asked questions

What is CVE-2025-28380?: A cross-site scripting (XSS) vulnerability in OpenC3 COSMOS before v6.0.2 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the URL parameter.
How severe is CVE-2025-28380?: CVE-2025-28380 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-28380 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-28380?: CVE-2025-28380 affects Openc3 Cosmos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-28380?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-28380 have an EU (EUVD) identifier?: Yes. CVE-2025-28380 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18280.
When was CVE-2025-28380 published?: CVE-2025-28380 was published on 2025-06-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openc3:cosmos:6.0.0:*:*:*:enterprise:*:*:*

More vulnerabilities in Openc3 Cosmos

CVE-2025-28389 — Critical (CVSS 9.8): Weak password requirements in OpenC3 COSMOS v6.0.0 allow attackers to bypass authentication via a brute force attack.
CVE-2025-28388 — Critical (CVSS 9.8): OpenC3 COSMOS before v6.0.2 was discovered to contain hardcoded credentials for the Service Account.
CVE-2025-28386 — Critical (CVSS 9.8): A remote code execution (RCE) vulnerability in the Plugin Management component of OpenC3 COSMOS v6.0.0 allows attackers…
CVE-2026-42088 — Critical (CVSS 9.6): OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems.…
CVE-2026-42087 — Critical (CVSS 9.6): OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems.…
CVE-2025-28384 — Critical (CVSS 9.1): An issue in the /script-api/scripts/ endpoint of OpenC3 COSMOS before 6.1.0 allows attackers to execute a directory…

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