CVE-2026-66031: Ekushey Project Manager CRM XSS Flaw

CVE-2026-66031 Overview

CVE-2026-66031 is a stored cross-site scripting (XSS) vulnerability in Ekushey Project Manager CRM through version 5.0. Authenticated client users can inject arbitrary HTML and JavaScript through the Reply Ticket field of the support ticketing module. The injected payload persists in the application and executes when Staff or Administrator users open the Support Ticket detail page. The flaw is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation).

Critical Impact
A low-privileged client account can hijack Staff or Administrator sessions, perform actions on their behalf, and pivot to higher-privileged workflows within the CRM.

Affected Products

Ekushey Project Manager CRM version 5.0
Ekushey Project Manager CRM prior versions (all releases through 5.0)
Deployments exposing the Support Ticket module to authenticated client users

Discovery Timeline

2026-07-27 - CVE-2026-66031 published to NVD
2026-07-28 - Last updated in NVD database

Technical Details for CVE-2026-66031

Vulnerability Analysis

The vulnerability resides in the Reply Ticket workflow of the Ekushey Project Manager CRM support module. Client users submitting a ticket reply can include raw HTML and script content in the message body. The application stores this content without sanitization and renders it back into the Support Ticket detail page consumed by higher-privileged accounts.

When a Staff or Administrator user opens the affected ticket, their browser parses the attacker-controlled markup in the context of the CRM origin. The payload runs with the victim's authenticated session, giving the attacker access to session tokens, CSRF tokens, and any data reachable through the victim's role. Because storage is server-side and delivery is passive, the attacker does not need to interact with the victim beyond waiting for the ticket to be reviewed.

Root Cause

The root cause is missing output encoding when rendering the reply content within the ticket detail template. User-supplied input traverses the persistence layer and reaches the browser as executable HTML rather than escaped text. Server-side input validation and context-aware output encoding are both absent for this field.

Attack Vector

Exploitation requires a valid client-tier account, which the CRM issues to customer users. The attacker submits a ticket reply containing an HTML payload such as an <img> tag with an onerror handler or an inline <script> block. When a Staff or Administrator user views the ticket, the payload executes in that session. Practical outcomes include session token theft, forced CRM actions through XHR, credential harvesting via injected forms, and content defacement of the support view.

No verified proof-of-concept code has been published. Technical details are described in the VulnCheck Advisory on Stored XSS and the GitHub CVE-2026-66031 Disclosure.

Detection Methods for CVE-2026-66031

Indicators of Compromise

Ticket reply records in the CRM database containing HTML tags such as <script>, <img onerror=, <svg onload=, or javascript: URIs
Outbound requests from Staff or Administrator browsers to unfamiliar domains immediately after viewing a support ticket
Unexpected administrative actions correlated in time with a Staff user opening a specific ticket

Detection Strategies

Query the ticket replies table for entries where the message body contains HTML control characters or event handler attributes
Deploy a Content Security Policy in report-only mode and monitor report-uri submissions for inline script violations on ticket pages
Correlate web server access logs for /support/ticket/* GET requests by Staff users with subsequent anomalous POST activity from the same session

Monitoring Recommendations

Enable verbose audit logging on the Support Ticket module and forward events to a central SIEM for retention
Alert on any privileged CRM action (user creation, role change, data export) that occurs within seconds of a ticket view event
Monitor browser telemetry on administrator workstations for script execution originating from the CRM origin

How to Mitigate CVE-2026-66031

Immediate Actions Required

Restrict client-tier accounts from submitting ticket replies until a patched build is deployed, or route replies through moderation
Audit existing ticket reply content for stored payloads and purge or neutralize any entries containing script or event-handler markup
Rotate active session tokens for Staff and Administrator accounts and require reauthentication

Patch Information

No vendor patch is referenced in the NVD entry at the time of publication. Consult the Codecanyon Product Overview for vendor release notes and monitor the GitHub CVE-2026-66031 Disclosure for coordinated fix information.

Workarounds

Place the CRM behind a web application firewall with rules that block HTML tags and JavaScript event handlers in the Reply Ticket parameter
Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources on ticket detail pages
Segment administrator access to the CRM through a dedicated browser profile or jump host to limit the blast radius of a successful XSS

bash

# Example nginx CSP header to reduce XSS impact on ticket pages
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'" always;