CVE-2025-64491: SuiteCRM Reflected XSS Vulnerability

CVE-2025-64491 Overview

CVE-2025-64491 is an unauthenticated reflected Cross-Site Scripting (XSS) vulnerability in SuiteCRM, an open-source Customer Relationship Management (CRM) platform maintained by SalesAgility. Versions 7.14.7 and earlier fail to sanitize user-supplied input reflected in server responses, allowing attackers to inject arbitrary JavaScript into the victim's browser session. Successful exploitation can lead to full account takeover, including credential harvesting through modified login forms that transmit data to attacker-controlled servers. Delivery relies on phishing, social media, or other channels that trick a victim into clicking a crafted URL. SalesAgility fixed the issue in SuiteCRM 7.14.8. The vulnerability is categorized under CWE-79.

Critical Impact
Unauthenticated attackers can execute arbitrary JavaScript in the victim's browser session, enabling credential theft and full SuiteCRM account takeover through a single malicious link.

Affected Products

SuiteCRM versions 7.14.7 and below
SalesAgility SuiteCRM (open-source CRM application)
Fixed version: SuiteCRM 7.14.8

Discovery Timeline

2025-11-08 - CVE-2025-64491 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-64491

Vulnerability Analysis

CVE-2025-64491 is a reflected Cross-Site Scripting flaw affecting SuiteCRM 7.14.7 and earlier. The application echoes attacker-controlled input into HTTP responses without proper output encoding or contextual sanitization. When a victim loads a crafted URL, the injected JavaScript executes within the origin of the SuiteCRM instance, giving the attacker access to session cookies, DOM contents, and any authenticated actions the victim can perform.

Because exploitation happens in the browser and inherits the victim's authenticated context, attackers can rewrite the login form to exfiltrate credentials, issue authenticated API calls, or pivot to CRM data such as customer records, contracts, and email content. The scope change reflects that JavaScript executed on the SuiteCRM origin can affect other resources beyond the vulnerable component.

Root Cause

The root cause is missing or insufficient output encoding of reflected request parameters in server-rendered responses. Under CWE-79, input received via HTTP parameters is incorporated into HTML output without neutralizing characters that alter the document structure, such as <, >, ", and '. This allows an attacker to break out of the intended data context and introduce active script content.

Attack Vector

Exploitation is network-based and requires user interaction. An attacker crafts a URL pointing to the vulnerable SuiteCRM endpoint with an XSS payload in a reflected parameter. The attacker distributes the link through phishing email, chat, or social media. When an authenticated SuiteCRM user opens the link, the payload executes in their browser and can perform any action available to that user, including altering the login form to post credentials to an external host.

php

// Security patch context: SuiteCRM 7.14.8 Release
// File: Api/V8/Middleware/ParamsMiddleware.php
 use Api\V8\Param\BaseParam;
 use Exception;
 use LoggerManager;
+use RuntimeException;
 use Slim\Http\Request;
 use Slim\Http\Response;
 use Api\V8\BeanDecorator\BeanManager;

// File: Api/V8/OAuth2/Repository/AccessTokenRepository.php
 use Api\V8\BeanDecorator\BeanManager;
 use Api\V8\OAuth2\Entity\AccessTokenEntity;
+use BeanFactory;
 use DateTime;
 use InvalidArgumentException;
 use League\OAuth2\Server\Entities\AccessTokenEntityInterface;

Source: SuiteCRM commit 40da2845

Detection Methods for CVE-2025-64491

Indicators of Compromise

Web server access logs containing SuiteCRM URLs with encoded script payloads such as %3Cscript%3E, javascript:, onerror=, or onload= in query parameters.
HTTP referrer entries pointing to unfamiliar external domains preceding SuiteCRM authentication requests.
Outbound HTTP POST requests from user browsers to non-SuiteCRM domains containing form field names like username or password.
Unexpected session activity or successful logins from geolocations inconsistent with the legitimate user.

Detection Strategies

Deploy Web Application Firewall (WAF) rules that inspect query parameters and POST bodies for reflected XSS patterns before requests reach SuiteCRM.
Enforce a strict Content Security Policy (CSP) and monitor Content-Security-Policy-Report-Only violations to identify injection attempts against SuiteCRM pages.
Correlate SuiteCRM application logs with proxy or DNS logs to identify users redirected from unfamiliar external referrers.
Hunt for anomalous outbound POSTs from user endpoints to domains not associated with the organization's SuiteCRM deployment.

Monitoring Recommendations

Alert on inbound requests to SuiteCRM URLs containing HTML tag characters, event handler attributes, or javascript: schemes in parameters.
Track SuiteCRM authentication events for logins that immediately follow a request bearing a suspicious referrer or query string.
Monitor CSP violation reports and JavaScript errors reported by browsers loading SuiteCRM pages.
Review email gateway telemetry for links pointing to the SuiteCRM host with encoded or obfuscated query strings.

How to Mitigate CVE-2025-64491

Immediate Actions Required

Upgrade all SuiteCRM instances to version 7.14.8 or later, which contains the vendor fix.
Inventory internet-exposed SuiteCRM deployments and prioritize patching those reachable from untrusted networks.
Invalidate active SuiteCRM sessions and require re-authentication after patching to disrupt any hijacked sessions.
Notify users about phishing risks targeting SuiteCRM and instruct them to avoid clicking unsolicited SuiteCRM links.

Patch Information

SalesAgility resolved CVE-2025-64491 in SuiteCRM 7.14.8. The upstream commit is 40da2845a170832a4e9e9fa0ebe731f8c34de42d, and the vendor advisory is published as GHSA-prfm-6667-x3mv. Administrators should review the release notes and apply the update through their standard SuiteCRM upgrade process.

Workarounds

Place SuiteCRM behind a WAF configured with signatures for reflected XSS payloads until the upgrade to 7.14.8 is complete.
Deploy a restrictive Content Security Policy that disallows inline scripts and limits script sources to trusted origins.
Set HttpOnly and Secure flags on SuiteCRM session cookies to reduce the impact of script-based session theft.
Restrict SuiteCRM access to VPN or SSO-authenticated users where feasible to limit the exposure of the reflected endpoint.

bash

# Example nginx configuration adding a strict CSP and secure cookie flags
# in front of a SuiteCRM instance pending upgrade to 7.14.8
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "SAMEORIGIN" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;

# Force secure session cookie attributes
proxy_cookie_path / "/; HTTPOnly; Secure; SameSite=Lax";