CVE-2026-15909 Overview
CVE-2026-15909 is an authorization bypass vulnerability in RafyMrX TOKO-ONLINE-ROTI, an online bakery shop web application. The flaw resides in the proses/add.php script, where manipulation of the kd_cs argument allows attackers to bypass authorization controls. The issue is exploitable remotely over the network and requires only low-privilege access. RafyMrX uses a rolling release strategy, so no fixed version identifier is available. According to the disclosure, the vendor was contacted early but did not respond. The weakness is classified as improper authorization [CWE-285].
Critical Impact
Authenticated remote attackers can manipulate the kd_cs parameter in proses/add.php to bypass authorization controls and access or modify data belonging to other users.
Affected Products
- RafyMrX TOKO-ONLINE-ROTI (rolling release)
- Commits up to ddfe1cd587be0a0b5135d8b6e85cce2ec3aece99
- Component: proses/add.php
Discovery Timeline
- 2026-07-16 - CVE-2026-15909 published to NVD
- 2026-07-16 - Last updated in NVD database
Technical Details for CVE-2026-15909
Vulnerability Analysis
The vulnerability affects proses/add.php, a server-side PHP handler used to add records within the TOKO-ONLINE-ROTI shopping workflow. The kd_cs argument, which represents a customer identifier code, is accepted from the request and used without adequate authorization checks. An authenticated user can substitute another user's kd_cs value and cause the application to perform actions in that user's context. This aligns with [CWE-285] Improper Authorization, where the application authenticates a request but fails to verify that the caller has permission to act on the target resource.
Root Cause
The root cause is missing server-side enforcement of ownership between the authenticated session and the kd_cs supplied by the client. The application trusts the request parameter to identify the target account rather than deriving the account identifier from the authenticated session. Because RafyMrX ships as a rolling release, no numbered patch version is available to tie the fix to.
Attack Vector
Exploitation is performed over the network by sending a crafted HTTP POST or GET request to proses/add.php with an altered kd_cs value. The attacker only needs low-level application privileges, and no user interaction is required. Successful exploitation leads to limited impact on confidentiality, integrity, and availability, since the attacker can add or manipulate records assigned to other customer accounts.
No verified proof-of-concept code is published for this issue. Refer to the VulDB entry for CVE-2026-15909 and the VulDB vulnerability record #379368 for technical details.
Detection Methods for CVE-2026-15909
Indicators of Compromise
- HTTP requests to proses/add.php where the kd_cs parameter does not match the kd_cs bound to the authenticated session.
- Multiple sequential requests from a single session enumerating different kd_cs values.
- Database records created or modified under a kd_cs value not owned by the acting session user.
Detection Strategies
- Instrument the application to log the authenticated session identifier alongside every kd_cs value received by proses/add.php and alert on mismatches.
- Add web application firewall (WAF) rules that compare session-bound identifiers to request parameters for horizontal privilege escalation attempts.
- Review historical web server logs for requests to proses/add.php with unusual kd_cs values or high-volume enumeration patterns.
Monitoring Recommendations
- Monitor authentication and application logs for account activity that does not correlate with the owning user's typical behavior.
- Track database write operations on customer-scoped tables and alert when the writer does not own the target row.
- Configure alerts for repeated 4xx or 5xx responses from proses/add.php, which may indicate probing.
How to Mitigate CVE-2026-15909
Immediate Actions Required
- Restrict network access to the TOKO-ONLINE-ROTI application until the codebase is patched, for example by placing it behind an authenticated reverse proxy.
- Modify proses/add.php to derive kd_cs from the authenticated session rather than from request input.
- Audit existing records for entries created through the vulnerable code path and reconcile ownership.
Patch Information
No official patch has been released. The vendor did not respond to the disclosure, and the project follows a rolling release model with no versioned advisory. Users should apply source-level fixes locally and monitor the upstream repository for future commits addressing improper authorization in proses/add.php.
Workarounds
- Add a server-side authorization check that validates the session user owns the kd_cs value before executing the action in proses/add.php.
- Deploy WAF rules to block requests where the kd_cs parameter does not match a whitelist derived from the session.
- Disable or take offline the proses/add.php endpoint if it is not required in production.
# Example Apache rewrite guard to require session-bound access to proses/add.php
<Location "/proses/add.php">
Require valid-user
# Additional application-level check must verify kd_cs matches the session
</Location>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
