Security readout for executives and security teams
Plain-English summary
CVE-2025-56536 is a stored cross-site scripting issue reported in OpenNebula v6.10.0.1. An attacker could place malicious web content in a user information field, which may run when another user views it. The likely business impact is account/session abuse or misleading actions in the OpenNebula web interface, not direct system takeover.
Executive priority
Treat as a near-term remediation item for affected OpenNebula environments. It is not rated critical, but stored XSS in cloud management software can support credential theft, session misuse, or unauthorized UI actions if administrators view malicious content.
Technical view
The CVE describes CWE-79 stored XSS in OpenNebula v6.10.0.1 via the user information parameter. CVSS 3.1 is 6.1, with network access, low complexity, no privileges, required user interaction, changed scope, and low confidentiality/integrity impact. Availability impact is listed as none.
Likely exposure
Exposure is most relevant for organizations running OpenNebula v6.10.0.1, especially where the web interface or user profile fields are reachable by untrusted users. The CVE affected-product metadata is incomplete, so version validation is important.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. A public GitHub reference exists, but that alone should not be treated as evidence of real-world exploitation.
Researcher notes
Public data is limited. The CVE names OpenNebula v6.10.0.1 and the user information parameter, but structured affected-product data is not populated. No patch is named in the provided sources. Avoid assuming other versions are affected without vendor confirmation.
Mitigation direction
- Inventory OpenNebula deployments and identify any v6.10.0.1 instances.
- Check OpenNebula vendor guidance for confirmed fixed versions or patches.
- Limit access to OpenNebula web interfaces to trusted networks and users.
- Review and sanitize existing user information fields if suspicious content is found.
- Prioritize remediation where untrusted users can modify profile information.
Validation and detection
- Confirm installed OpenNebula version against the CVE description.
- Review who can edit the user information parameter.
- Inspect user information fields for unexpected HTML or script-like content.
- Check web access logs for unusual profile-edit activity.
- Use vendor or researcher references only in a controlled test environment.
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-2025-56536 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-2025-56536CVE 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.