Overview
CVE-2025-30186 is a medium severity vulnerability affecting Open-Xchange AppSuite. This vulnerability allows attackers to upload malicious content as a file, which can then be used to execute script code when a user follows an attacker-controlled link. This can lead to unintended actions being executed within the context of the user’s account, potentially including the exfiltration of sensitive information.
Technical Details
The vulnerability stems from insufficient sanitization and validation of uploaded file content within the Open-Xchange AppSuite. An attacker can craft a file containing malicious script code and upload it to the system. By then crafting a link that, when clicked by a user, triggers the execution of this uploaded file, the attacker can execute arbitrary script code within the user’s browser session and with the privileges of that user’s account. This can include actions such as accessing stored cookies, modifying data, and sending requests on behalf of the user.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) score for CVE-2025-30186 is 5.4, indicating a MEDIUM severity vulnerability. The CVSS vector is likely to include attributes reflecting the need for user interaction (clicking a malicious link) and the potential for information disclosure. While no privileges are required to exploit the vulnerability initially, successful exploitation allows the attacker to act with the privileges of the victim user.
Possible Impact
Successful exploitation of CVE-2025-30186 can have significant consequences, including:
- Account Takeover: An attacker could potentially gain control of a user’s account.
- Data Exfiltration: Sensitive information, such as emails, contacts, and other stored data, could be stolen.
- Phishing Attacks: The vulnerability could be used to launch targeted phishing attacks against other users.
- Malware Distribution: The compromised account could be used to distribute malware to other users within the Open-Xchange AppSuite environment.
Mitigation or Patch Steps
To mitigate the risk posed by CVE-2025-30186, it is crucial to deploy the provided updates and patch releases from Open-Xchange as soon as possible. Please refer to the official Open-Xchange documentation for detailed instructions on how to apply the necessary patches.
- Apply the latest patches provided by Open-Xchange.
- Educate users on the dangers of clicking suspicious links, even those appearing to originate from trusted sources.
