CVE-2020-25262: 
PHP vulnerability analysis and mitigation

PyroCMS 3.7 was found to be vulnerable to Cross-Site Request Forgery (CSRF) through the admin/pages/delete/ URI, which could allow attackers to delete pages without user consent. The vulnerability was assigned CVE-2020-25262 and was disclosed on October 8, 2020. This security flaw affects PyroCMS installations up to version 3.7, potentially impacting administrators using the content management system (NVD).

The vulnerability exists because certain administrative actions, specifically page deletion operations, are performed via GET requests without proper CSRF protection. The CVSS v3.1 base score for this vulnerability is 4.3 (MEDIUM), with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. This indicates that the vulnerability can be exploited remotely, requires low attack complexity, needs no privileges, but does require user interaction (NVD).

When successfully exploited, this vulnerability allows an attacker to delete pages from the PyroCMS installation without the administrator's knowledge or consent. The impact is limited to integrity (modification of data) through unauthorized page deletions, which could result in loss of content and disruption of website operations (GitHub Exploit).

The vulnerability can be exploited by creating a malicious form hosted on an attacker's server. When an authenticated administrator visits the malicious page, it can trigger unauthorized page deletions through CSRF. The exploit requires the victim to be authenticated as an administrator in PyroCMS and to visit the attacker's crafted webpage (GitHub Exploit).

The vulnerability affects PyroCMS version 3.7 and earlier versions. Users should upgrade to a patched version of PyroCMS that implements proper CSRF protection for administrative actions. Additionally, administrators should be cautious about clicking on unknown links while logged into the CMS (PyroCMS).