CVE-2025-61224 is a Cross Site Scripting (XSS) vulnerability identified in the DokuWiki software, specifically in the 2025-05-14a 'Librarian' release. The vulnerability arises from improper sanitization of the 'q' parameter, which is used in URL queries. An attacker can craft a malicious URL containing a specially crafted 'q' parameter that, when visited by a user, causes arbitrary script code to execute in the context of the victim's browser. This type of vulnerability can lead to the theft of session cookies, user credentials, or other sensitive information accessible via the browser, and can also be leveraged to perform actions on behalf of the user if the wiki has privileged functions accessible via the browser session. The CVSS 3.1 vector indicates the attack complexity is low (AC:L), no privileges are required (PR:N), and the attack is network accessible (AV:N), but user interaction is required (UI:R). The impact is primarily on confidentiality (C:H), with no direct impact on integrity or availability. No patches or exploit code are currently publicly available, and the affected versions are not explicitly detailed beyond the named release. The vulnerability was reserved on 2025-09-26 and published on 2025-10-06, indicating recent discovery and disclosure.

For European organizations, the primary impact of this vulnerability is the potential compromise of sensitive information through the execution of malicious scripts in users' browsers. Organizations using DokuWiki for internal or external documentation, knowledge bases, or collaboration platforms could see data leakage or session hijacking if users access maliciously crafted URLs. Public-facing DokuWiki instances are at higher risk, especially if users have elevated privileges or if sensitive information is accessible via the wiki interface. The confidentiality breach could lead to further attacks such as phishing or lateral movement within networks. While the vulnerability does not directly affect system integrity or availability, the indirect consequences of stolen credentials or session tokens could be severe. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as proof-of-concept exploits may emerge. European organizations with compliance obligations around data protection (e.g., GDPR) must consider the risk of data exposure and potential regulatory consequences.

1. Monitor official DokuWiki channels and security advisories for patches addressing CVE-2025-61224 and apply them promptly once available. 2. In the interim, implement strict input validation and sanitization on the 'q' parameter at the web server or application level to block or neutralize malicious payloads. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing the wiki. 4. Educate users about the risks of clicking on suspicious links, especially those containing unusual URL parameters. 5. Restrict public access to DokuWiki instances where possible, or require authentication to reduce exposure. 6. Use web application firewalls (WAFs) with custom rules to detect and block XSS attack patterns targeting the 'q' parameter. 7. Conduct regular security assessments and penetration testing on DokuWiki deployments to identify and remediate similar vulnerabilities proactively.