What’s Vulnerable › Vulnerabilities

CVE-2025-56534

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-29 · updated 2026-10-15
• Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability in the custom authenticator driver of opennebula v6.10.0.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.

Affected products

• OpenNebula: before 7.0.0 — fixed in 7.0.0

How to fix

Upgrade to a fixed version: OpenNebula 7.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56534
• https://opennebula.io/opennebula-7/
• https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56534

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