CVE-2026-49225 in Vvveb
Summary
by MITRE • 08/18/2026
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend product revision operations allow a low-privileged Vendor to access revisions for products owned by another Vendor. The admin/controller/product/revisions.php route reuses admin/controller/content/revisions.php, while admin/sql/sqlite/product_content_revision.sql trusts caller-controlled product_id, language_id, and created_at values without applying the current admin_id to revision reads, restores, and deletes. An attacker can read historic product content, restore a revision over another Vendor's live product content, or delete revision records, exposing private copy, corrupting product pages, and removing audit history. This issue is fixed in version 1.0.8.4.
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Analysis
by VulDB Data Team • 08/18/2026
Vvveb CMS versions prior to 1.0.8.4 contain a critical authorization flaw within its backend revision management system that allows low-privileged users with Vendor access levels to perform unauthorized operations on product revisions belonging to other vendors. This vulnerability stems from improper implementation of access controls in the administrative interface, specifically affecting how historical content changes are managed for e-commerce products. The core issue lies in the architectural reuse of code paths where the route admin/controller/product/revisions.php delegates functionality to admin/controller/content/revisions.php without adequately enforcing tenant isolation boundaries based on user identity.
The technical root cause involves a failure to bind revision operations to the authenticated administrator's session context during critical data manipulation actions such as reading, restoring, and deleting product content revisions. The underlying database schema file admin/sql/sqlite/product_content_revision.sql accepts caller-controlled parameters including product_id, language_id, and created_at without validating that these resources belong to entities owned by or accessible to the current user identified by admin_id. This lack of ownership verification means that any authenticated vendor can specify arbitrary identifiers for products they do not own, effectively bypassing logical access controls designed to separate data between different vendors in a multi-tenant environment.
The operational impact of this vulnerability is severe and multifaceted, affecting confidentiality, integrity, and availability within the CMS ecosystem. Attackers with low-level Vendor privileges can read sensitive historical product content that should remain private to other vendors, potentially exposing proprietary pricing strategies, marketing copy, or customer data embedded in past versions. Furthermore, an attacker can restore a malicious revision over another vendor's live product page, leading to defacement, misinformation dissemination, or insertion of fraudulent content into publicly visible storefronts. Additionally, the ability to delete revision records allows attackers to erase audit trails and historical evidence, complicating forensic investigations and compliance reporting requirements for affected organizations.
This vulnerability aligns with CWE-269 Improper Privilege Management as it involves a user possessing insufficient privileges performing actions beyond their authorized scope due to flawed access control logic. It also maps to ATT&CK technique T1078 Valid Accounts, where attackers leverage legitimate credentials to gain unauthorized access to resources, and potentially T1485 Data Destruction if the deletion capabilities are exploited maliciously. The flaw represents a classic case of broken object level authorization where resource identifiers are trusted without verifying ownership against the current user's permissions.
To mitigate this vulnerability, organizations must immediately upgrade Vvveb CMS to version 1.0.8.4 or later which addresses these access control deficiencies by enforcing proper association between revision operations and the authenticated admin_id. Until upgrading is possible, administrators should restrict backend access strictly to trusted users with elevated privileges rather than distributing vendor-level accounts broadly across untrusted parties. Implementing additional server-side validation that cross-references requested product identifiers against a whitelist of products owned by the current user can provide temporary defense in depth while patch deployment proceeds. Regular security audits focusing on multi-tenant isolation logic are recommended to prevent similar authorization bypasses in other modules of the content management system.