CVE-2025-1891 is a Cross-Site Request Forgery (CSRF) vulnerability identified in shishuocms version 1.1. Shishuocms is a content management system, and this vulnerability allows an attacker to trick an authenticated user into submitting unauthorized requests to the web application without their consent. The vulnerability is classified as problematic and has a CVSS 4.0 base score of 5.3, indicating a medium severity level. The attack vector is network-based (AV:N), requiring no privileges (PR:N) and no authentication (AT:N), but it does require user interaction (UI:P), such as clicking a malicious link or visiting a crafted webpage. The impact primarily affects the integrity of the system (VI:L), with no direct impact on confidentiality or availability. The vulnerability does not require any special conditions like scope change or security controls bypass. Although the exact processing affected is unspecified, the nature of CSRF means that an attacker can cause state-changing actions on behalf of the victim, such as modifying content, changing settings, or performing administrative tasks if the victim has sufficient privileges. The exploit has been publicly disclosed but there are no known exploits actively used in the wild at this time. No official patches or mitigations have been linked yet, which suggests that users of shishuocms 1.1 remain exposed until updates or workarounds are applied.

For European organizations using shishuocms 1.1, this vulnerability poses a risk of unauthorized actions being performed within their CMS environment. This could lead to unauthorized content changes, defacement, or manipulation of website data, potentially damaging the organization's reputation and trustworthiness. While the confidentiality and availability impacts are minimal, the integrity compromise can disrupt business operations and content reliability. Organizations with web portals or public-facing content managed by shishuocms are particularly at risk, especially if users with elevated privileges are targeted. The requirement for user interaction means phishing or social engineering campaigns could be used to exploit this vulnerability. Given the public disclosure, attackers may develop exploits, increasing the risk over time. The lack of known active exploitation currently provides a window for mitigation, but organizations should act promptly to reduce exposure. The impact is more significant for sectors relying heavily on web content management for customer engagement, such as media, education, and government services within Europe.

Since no official patches are currently available, European organizations should implement several specific mitigations: 1) Enforce strict anti-CSRF tokens in all state-changing requests within shishuocms to validate legitimate user actions. 2) Implement Content Security Policy (CSP) headers to restrict the domains from which scripts can be loaded, reducing the risk of malicious script execution. 3) Educate users, especially administrators, about phishing and social engineering tactics to prevent inadvertent interaction with malicious links. 4) Limit user privileges to the minimum necessary, reducing the potential impact if an account is compromised. 5) Monitor web server logs for unusual or unauthorized requests that could indicate exploitation attempts. 6) If possible, isolate the CMS environment behind additional authentication layers or VPNs to restrict access. 7) Regularly back up CMS data to enable quick recovery in case of content tampering. 8) Stay updated with vendor announcements for patches or official fixes and apply them promptly once available.