CVE-2025-69236: Raytha CMS Stored XSS Vulnerability

CVE-2025-69236 Overview

Raytha CMS is vulnerable to a Stored Cross-Site Scripting (XSS) attack through the FieldValues[1].Value parameter in post editing functionality. An authenticated attacker with permissions to edit posts can inject arbitrary HTML and JavaScript code into the website, which will be rendered and executed when any user visits the edited page.

Critical Impact
Authenticated attackers can inject persistent malicious scripts that execute in the browsers of all users visiting affected pages, potentially leading to session hijacking, credential theft, or further malware distribution.

Affected Products

Raytha CMS versions prior to 1.4.6

Discovery Timeline

2026-03-16 - CVE-2025-69236 published to NVD
2026-03-16 - Last updated in NVD database

Technical Details for CVE-2025-69236

Vulnerability Analysis

This Stored XSS vulnerability exists within Raytha CMS's post editing functionality. When users with edit permissions modify content, the application fails to properly sanitize the FieldValues[1].Value parameter before storing it in the database. This allows malicious HTML and JavaScript to be persisted and subsequently rendered in the browsers of visitors viewing the affected page.

Stored XSS is particularly dangerous because the malicious payload is permanently stored on the target server, affecting every user who views the compromised content. Unlike reflected XSS, victims do not need to be tricked into clicking a malicious link—simply visiting the legitimate page triggers the attack.

The vulnerability requires authenticated access with post editing privileges, which somewhat limits the attack surface. However, in multi-user CMS environments or where editor accounts may be compromised, this vulnerability poses a significant risk to all site visitors.

Root Cause

The root cause is improper input validation and output encoding (CWE-79). The Raytha CMS application does not adequately sanitize user-supplied input in the FieldValues[1].Value parameter before storing it in the database, nor does it properly encode the output when rendering the content to users. This allows an attacker to inject malicious scripts that bypass input filters and execute in the context of other users' browser sessions.

Attack Vector

The attack is carried out over the network by an authenticated user with post editing permissions. The attacker navigates to the post editing interface and injects malicious JavaScript or HTML code into the FieldValues[1].Value parameter field. When the content is saved, the malicious payload is stored in the database. Subsequently, when any user—including administrators—visits the page containing the edited content, the malicious script executes in their browser context.

The attack requires user interaction as victims must navigate to the compromised page for the payload to execute. The impact extends beyond the vulnerable application itself, as the injected scripts can access cookies, session tokens, and other sensitive information within the user's browser session.

Detection Methods for CVE-2025-69236

Indicators of Compromise

Unexpected JavaScript or HTML tags appearing in post content or database fields
User reports of unusual browser behavior or pop-ups when viewing CMS content
Web application firewall logs showing blocked XSS patterns in POST requests to editing endpoints
Anomalous modifications to post content by privileged accounts

Detection Strategies

Implement web application firewall rules to detect and block common XSS payloads in form submissions
Deploy Content Security Policy (CSP) headers to mitigate the impact of successful XSS attacks
Conduct regular security audits of stored content for malicious script patterns
Monitor authentication logs for suspicious editing activity from compromised accounts

Monitoring Recommendations

Enable detailed logging for all content modification operations in Raytha CMS
Configure alerts for detection of script tags or event handlers in user-submitted content
Review access logs for editing endpoints and correlate with user behavior analytics
Implement real-time scanning of database content for known XSS patterns

How to Mitigate CVE-2025-69236

Immediate Actions Required

Upgrade Raytha CMS to version 1.4.6 or later immediately
Review all existing post content for potentially injected malicious scripts
Audit user accounts with editing privileges and verify their integrity
Implement Content Security Policy headers to reduce XSS impact

Patch Information

The vulnerability has been addressed in Raytha CMS version 1.4.6. Organizations running earlier versions should upgrade immediately. For additional details, refer to the CERT Poland advisory or the Raytha official website.

Workarounds

Restrict post editing permissions to trusted users only until the patch can be applied
Implement additional server-side input validation for content fields as a defense-in-depth measure
Deploy a Web Application Firewall (WAF) with XSS detection rules in front of the CMS
Enable strict Content Security Policy headers to prevent inline script execution

bash

# Example CSP header configuration for Apache
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'self';"