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. With a CVSS score of 6.1, this vulnerability is classified as medium severity, indicating a notable risk to organizations utilizing this software. The vulnerability can be exploited through network vectors, requiring user interaction to trigger the attack, which may lead to unauthorized script execution in the context of the victim's session.
Risk to organizations includes potential data theft, session hijacking, and unauthorized actions performed on behalf of users. As such, it is crucial for organizations to prioritize patching this vulnerability in their upcoming patch cycles. The exploit status indicates that there is an existing proof of concept available, which may increase the urgency for remediation.
Organizations should assess their exposure to this vulnerability and take appropriate measures to mitigate risks. The urgency for defenders is moderate, and they should schedule remediation as part of their routine maintenance.
In conclusion, the presence of this XSS vulnerability in OpenNebula necessitates immediate attention. Organizations must prioritize patching to safeguard their applications and maintain user trust.
Vulnerability Details
The vulnerability allows attackers to exploit OpenNebula by injecting malicious scripts through the user information parameter. This can lead to various malicious activities including data manipulation and unauthorized access. The CVSS score of 6.1 indicates a medium severity, reflecting the potential impact on confidentiality and integrity but with a lower risk to availability.
The vulnerability affects versions of OpenNebula prior to 7.0.0. It was published on April 29, 2026, and is categorized under CWE-79, which pertains to improper neutralization of input during web page generation (XSS).
Technical Analysis
The root cause of this vulnerability lies in the failure to properly sanitize user inputs, allowing attackers to inject scripts that are executed in the context of the victim's browser. The attack vector is network-based, and the complexity is low, requiring no special privileges to initiate the attack. However, user interaction is necessary, as the victim must click on a link or perform an action that triggers the payload.
The confidentiality and integrity impacts are classified as low, indicating that while sensitive information may be exposed or manipulated, the overall availability of the system remains unaffected.
Risk & Impact Analysis
Organizations utilizing OpenNebula should be aware of the significant risks associated with this vulnerability. The potential for attackers to exploit this flaw can lead to unauthorized access and manipulation of user data, which poses a serious threat to organizational integrity and user trust.
The urgency for addressing this vulnerability is moderate, and organizations should schedule remediation during their next patch cycle. The attack complexity is low, enhancing the risk of exploitation, especially if user awareness is not adequately managed.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of OpenNebula include all versions prior to 7.0.0. Organizations using these versions are advised to upgrade to the latest version to mitigate risks associated with this vulnerability.
Mitigation & Remediation
Organizations should immediately patch OpenNebula to version 7.0.0 or later to remediate this vulnerability. If a patch is not available, consider applying configuration hardening measures to restrict user input and prevent script injections. Additionally, implementing web application firewalls can help filter out malicious requests.
Monitoring user interactions and logging relevant activities can also aid in detecting attempts to exploit this vulnerability. Organizations should validate their security posture through penetration testing to identify similar weaknesses.
Detection Guidance
Organizations should monitor logs for unusual patterns of user input that may indicate attempts to exploit the XSS vulnerability. Behavioral anomalies, such as unexpected redirects or script executions, should also be investigated. Implementing signatures to detect known malicious payloads can further enhance detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its demonstration of common flaws in web application security. Organizations must learn from this incident to strengthen their defenses against similar vulnerabilities in the future. A trend towards increasing exploitation of XSS vulnerabilities highlights the need for robust security practices.
Security teams should consider adopting a proactive approach to application security by integrating security testing into their development lifecycle. For further insights into effective security practices, refer to our resources on web application penetration testing and penetration testing methodology for comprehensive security assessments.
Additionally, organizations should maintain awareness of emerging threats and vulnerabilities to stay ahead of potential risks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)