CVE-2025-8621

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{}

{"analysis": {"en": {"generated_at": "2026-04-21T03:36:28.105663+00:00", "value": {"mitigation_remediation": ["Upgrade Mosaic Generator to the latest available version that removes the vulnerable parameter handling.", "If an upgrade is not yet available, restrict Contributor and higher roles to only trusted users and monitor account activity for suspicious behavior.", "Deploy a web application firewall or security plugin that blocks or sanitizes untrusted JavaScript input on content pages.", "Scan existing content for injected scripts and remove any malicious code manually."], "summary": {"action": "Update Plugin", "impact": "Stored Cross-Site Scripting"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the Mosaic Generator plugin released by odn, all versions up to and including 1.0.5, which is available for installation on WordPress sites. No specific patch version is listed in the data, but any installation of v1.0.5 or earlier is impacted.", "description_and_impact": "The Mosaic Generator WordPress plugin is vulnerable to stored cross\u2011site scripting through the \"c\" parameter because the input is not adequately sanitized and the output is not escaped. An attacker with Contributor\u2011level or higher can embed arbitrary JavaScript in a page that will run whenever a user views that page, potentially enabling data theft, session hijacking, or other malicious client\u2011side actions. This attack can compromise the confidentiality and integrity of users\u2019 information without affecting availability directly.", "risk_and_exploitability": "The CVSS score of 6.4 indicates a medium severity vulnerability. The EPSS score is below 1%, suggesting that exploitation is expected to be rare. The vulnerability is not listed in the CISA KEV catalog, further implying no widespread active attacks are documented. Because the flaw is authenticated, an attacker must first obtain Contributor\u2011level or higher access to the site, which limits the threat scope to sites with compromised accounts or insufficient role management. The typical attack path involves logging in as a user with the necessary permissions, using the vulnerable \"c\" parameter to inject JavaScript, and waiting for other users to view the affected page."}}}}, "created": "2025-08-12T07:36:54.371651+00:00", "updated": "2026-04-21T03:45:27.375920+00:00", "vendors": ["odn", "odn$PRODUCT$mosaic_generator", "wordpress", "wordpress$PRODUCT$wordpress"]}