CVE-2025-55422

Status: ModifiedHigh (8.8)—

In FoxCMS 1.2.6, there is a reflected Cross Site Scripting (XSS) vulnerability in /index.php/plus.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base score: 8.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.41%
Percentile among all scored CVEs: 34
Score date: 10/4/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1189 Drive-by Compromiseinitial access95 %
Primary impactT1059.007 JavaScriptexecution85 %
Secondary impactT1005 Data from Local Systemcollection70 %
Secondary impactT1098 Account Manipulationpersistence · privilege escalation60 %

XSS reflejado (CWE-79) en parámetro de /index.php/plus accesible remotamente sin autenticación (PR:N) requiere interacción del usuario (UI:R), es T1189 drive-by. Ejecuta JavaScript en navegador (T1059.007), accede a datos de sesión (T1005) y puede secuestrar cuentas (T1098).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Restrict Web-Based Content Disable or Remove Feature or Program User Training User Account Management Restrict File and Directory Permissions Privileged Account Management

Affected technologies (1)

Foxcms — Foxcms

CWEs

CWE-79

References

https://www.notion.so/CVE-2025-55422-2222b2fd0210803c8ae8cfefeb5e9c88

Raw JSON (NVD)

Show

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