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Vvveb CMS EUVDEUVD-2026-61035

| CVE-2026-49228 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-08-18 GitHub_M
8.8
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Vendor authentication required (PR:L); network-accessible backend; full C/I/A impact from product read, duplication, and cascading delete confirmed by description and commit diff.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Patch available
Aug 18, 2026 - 17:17 EUVD
Source Code Evidence Fetched
Aug 18, 2026 - 17:07 vuln.today
Analysis Generated
Aug 18, 2026 - 17:07 vuln.today
CVE Published
Aug 18, 2026 - 16:15 cve.org
HIGH 8.8

DescriptionCVE.org

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 operations allow a low-privileged Vendor to access products owned by another Vendor. The admin/controller/product/products.php controller accepts a caller-controlled product_id for duplicate and delete actions, and admin/sql/sqlite/product.sql loads and mutates products without consistently applying the current admin_id when view_other_products or edit_other_products is absent. An attacker can read product details, duplicate products, or delete products and related catalog data, exposing commercial information and causing unauthorized copies, catalog pollution, data loss, or business disruption. This issue is fixed in version 1.0.8.4.

AnalysisAI

Insecure Direct Object Reference in Vvveb CMS prior to 1.0.8.4 allows any authenticated low-privileged Vendor to read, duplicate, or delete products belonging to other Vendors by submitting arbitrary product_id values in backend product operations. The root cause is that the products.php controller passes caller-controlled product_id values to SQL operations without consistently enforcing admin_id scoping - the fix required adding conditional admin_id filtering across six DELETE statements in both MySQL and PostgreSQL query files. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires an active authenticated session with at minimum Vendor-level privileges in the Vvveb backend - unauthenticated access is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately captures the technical severity: remote exploitation requires only a Vendor-level session, involves no complexity, and delivers full read/write/delete impact on product data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary fix is to upgrade to Vvveb CMS version 1.0.8.4, which introduces conditional admin_id enforcement across all product DELETE and SELECT SQL operations and adds capability checks in the products.php controller. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: inventory all Vvveb CMS production instances in multi-vendor mode and immediately restrict vendor users to read and modify only their own vendor's products through access control lists. …

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EUVD-2026-61035 vulnerability details – vuln.today

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