Overview
CVE-2025-13239 details a medium severity security vulnerability found in Bdtask/CodeCanyon Isshue Multi Store eCommerce Shopping Cart Solution version 5. This vulnerability allows for remote exploitation, potentially leading to a disruption of expected behavioral workflows during the checkout process. The vendor has been notified but has not responded to the disclosure.
Technical Details
The vulnerability resides within the /submit_checkout file. Specifically, the order_total_amount and/or cart_total_amount arguments can be manipulated to influence the checkout workflow. An attacker can remotely manipulate these values, leading to unintended consequences in the ordering and payment process. The exact nature of the unintended consequences is not fully defined, but the ability to manipulate the amount parameters suggests potential for pricing manipulation or bypassing payment verification steps.
A proof-of-concept (PoC) exploit is publicly available, increasing the risk of active exploitation. This availability allows even less skilled attackers to potentially leverage the vulnerability.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) score for CVE-2025-13239 is 4.3 (MEDIUM).
- Attack Vector: Network (AV:N) – The vulnerability can be exploited remotely.
- Attack Complexity: Low (AC:L) – Exploitation requires little specialized access or conditions.
- Privileges Required: None (PR:N) – No privileges are required to exploit this vulnerability.
- User Interaction: None (UI:N) – No user interaction is required for exploitation.
- Scope: Unchanged (S:U) – An exploited vulnerability can only affect resources managed by the same security authority.
- Confidentiality Impact: None (C:N)
- Integrity Impact: Low (I:L)
- Availability Impact: None (A:N)
Possible Impact
The exploitation of CVE-2025-13239 could result in several negative impacts:
- Financial Loss: Manipulation of the order total could allow attackers to purchase goods at a lower price than intended.
- Order Disruption: The manipulation could lead to incorrect order processing, fulfillment issues, or even denial of service affecting the checkout process.
- Reputational Damage: Exploitation of this vulnerability could damage the reputation of the online store, leading to a loss of customer trust.
Mitigation or Patch Steps
Unfortunately, as the vendor has not responded, there are no official patches or updates available at this time. The following steps can be taken to mitigate the risk:
- Input Validation: Implement strict input validation and sanitization on the
order_total_amountandcart_total_amountparameters. Ensure that values are within expected ranges and conform to defined data types. - Rate Limiting: Implement rate limiting on the
/submit_checkoutendpoint to prevent automated attacks that attempt to brute-force manipulate the parameters. - Web Application Firewall (WAF): Deploy a WAF with rules to detect and block malicious requests targeting the vulnerability. Configure the WAF to flag requests with suspicious patterns in the
order_total_amountandcart_total_amountparameters. - Monitoring: Closely monitor the checkout process for anomalies, such as unusual order amounts or a sudden increase in failed transactions.
- Consider Alternative Solutions: Evaluate alternative e-commerce solutions if the risk associated with this unpatched vulnerability is unacceptable.
