Security readout for executives and security teams
Plain-English summary
CVE-2025-56535 is a medium-severity cross-site scripting issue reported in OpenNebula v6.10.0.1. If a user is tricked into viewing crafted content, an attacker could run script in that user’s browser session. This can expose limited data or modify limited content, depending on the user’s permissions.
Executive priority
Treat as a timely remediation item, especially for externally reachable OpenNebula administration portals. It is not currently supported by sources as actively exploited, but XSS in a management interface can become business-relevant if administrators are targeted.
Technical view
The CVE describes CWE-79 XSS in OpenNebula v6.10.0.1 through the zone attribute parameter. CVSS 3.1 is 6.1: network-accessible, low complexity, no privileges required, user interaction required, scope changed, low confidentiality and integrity impact, no availability impact.
Likely exposure
Organizations running OpenNebula v6.10.0.1 with users accessing the affected web interface are the primary exposure. Public internet access to the management interface would increase phishing and session-abuse risk. The source bundle does not identify other affected versions.
Exploitation context
CISA KEV status is false, and the provided sources do not state active exploitation. A public GitHub reference exists for this CVE, but the bundle does not provide enough evidence to characterize real-world exploitation or maturity.
Researcher notes
Evidence is limited to the CVE description, CVSS metadata, an OpenNebula 7 page, and a public GitHub reference. No official affected-version range, patch identifier, or vendor mitigation is provided in the source bundle.
Mitigation direction
- Check OpenNebula vendor guidance for a fixed or recommended version.
- Restrict access to OpenNebula management interfaces to trusted networks and users.
- Review whether upgrading to a supported OpenNebula release is appropriate.
- Apply compensating controls against untrusted input and risky browser sessions.
Validation and detection
- Inventory OpenNebula deployments and identify any v6.10.0.1 instances.
- Confirm whether the web interface exposes zone attribute handling to users.
- Review vendor advisories or release notes for CVE-2025-56535 coverage.
- Check web access logs for suspicious interactions involving zone-related fields.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-56535 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://opennebula.io/opennebula-7/CVE reference
- https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56535CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.