JoomShaper Easy Store Extension 1.0.0-3.0.0 Coupon Bulk Update ProductCoupon.php IDs sql injection

Summaryinfo

A vulnerability marked as problematic has been reported in JoomShaper Easy Store Extension 1.0.0-3.0.0. The impacted element is an unknown function of the file ProductCoupon.php of the component Coupon Bulk Update. Performing a manipulation of the argument IDs results in sql injection. This vulnerability is cataloged as CVE-2026-90902. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in JoomShaper Easy Store Extension 1.0.0-3.0.0. It has been classified as problematic. This affects an unknown code of the file ProductCoupon.php of the component Coupon Bulk Update. The manipulation of the argument IDs with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Joomla Extension - joomshaper.com - Authenticated, Privileged SQL Injection in Coupon Bulk Update in Easy Store extension 1.0.0-3.0.0 - The coupon bulk update task (administrator/index.php?option=com_easystore&task=coupon.couponBulkUpdate) took input IDs and directly concatenated them into raw SQL IN (...) clauses in ProductCoupon.php and CouponsModel.php without sanitization or parameterization. An authenticated administrator could manipulate the query through injected SQL syntax. Resolved by strictly casting all IDs to integers (array_map('intval', ...)) and adopting parameterized ->whereIn() query construction.

It is possible to read the advisory at joomshaper.com. This vulnerability is uniquely identified as CVE-2026-90902 since 09/14/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/23/2026). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

By approaching the search of inurl:ProductCoupon.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• JoomShaper

Name

• Easy Store Extension

Version

• 1.0.0-3.0.0

CPE 2.3info

• 🔒

CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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