A cross-site scripting (XSS) vulnerability in the custom authenticator driver of…
Priority MEDIUM 60CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00185 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opennebula:opennebula:*:*:*:*:*:*:*:* | before 7.0.0 | Vulnerable | OpenNebula |
- cpe:2.3:a:opennebula:opennebula:*:*:*:*:*:*:*:* Versions before 7.0.0 Vulnerable ·OpenNebula
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-56534
- 2026-10-03 Alias added: GHSA-mcv5-xfx5-62xf
References
More Opennebula vulnerabilities
- TI-2025-35367 A stored cross-site scripting (XSS) vulnerability in opennebula v6.10.0.1 and fixed in… CVSS 3.1MEDIUM 6.1
- TI-2025-35366 A stored cross-site scripting (XSS) vulnerability in opennebula v6.10.0.1 allows… CVSS 3.1MEDIUM 6.1
- TI-2025-35365 A cross-site scripting (XSS) vulnerability in opennebula v6.10.0.1 allows attackers to… CVSS 3.1MEDIUM 6.1
- TI-2022-17492 The FILES directive inside a VM template allows execution of uploaded files when the… CVSS 3.1CRITICAL 9.9
- TI-2022-17493 Unrestricted Upload of File with Dangerous Type vulnerability in OpenNebula OpenNebula… CVSS 3.1HIGH 7.5
- TI-2022-17491 The FILES Directive allows arbitrary files from the frontend system (including sensitive… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2025-56534 · CVE Program
- CVE-2025-56534 · NVD
- FIRST EPSS
- GHSA-mcv5-xfx5-62xf · GitHub Advisory Database · CC BY 4.0
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