CVE-2025-56536
Opennebula Stored XSS Vulnerability
Description
A stored cross-site scripting (XSS) vulnerability in opennebula v6.10.0.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the user information parameter.
INFO
Published Date :
April 29, 2026, 4:16 p.m.
Last Modified :
April 30, 2026, 8:08 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update OpenNebula to a patched version.
- Validate user input for malicious scripts.
- Sanitize all user-supplied data.
- Restrict script execution in user profiles.
Public PoC/Exploit Available at Github
CVE-2025-56536 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-56536.
| URL | Resource |
|---|---|
| https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56536 | Exploit Third Party Advisory |
| https://opennebula.io/opennebula-7/ | Product |
| https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56536 | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-56536 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-56536
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-56536 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-56536 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 30, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:opennebula:opennebula:*:*:*:*:*:*:*:* versions up to (excluding) 7.0.0 Added Reference Type CISA-ADP: https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56536 Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56536 Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://opennebula.io/opennebula-7/ Types: Product -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56536 -
New CVE Received by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Added Description A stored cross-site scripting (XSS) vulnerability in opennebula v6.10.0.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the user information parameter. Added Reference https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56536 Added Reference https://opennebula.io/opennebula-7/