CVE-2026-16605: MultiVendorX < 5.0.11 - Store Owner+ Cross-Vendor Store Takeover and Deletion via Missing Authorization
Noroxi assessment
Priority: Monitor (action score 28/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.46% (FIRST EPSS).
- Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Unknown MultiVendorX 5.0.11.
Low priority for now. Upgrade to Unknown MultiVendorX 5.0.11 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The MultiVendorX WordPress plugin before 5.0.11 does not verify that the store targeted through its REST API belongs to the requesting vendor, allowing an authenticated vendor (Store Owner and above) to view, take over, permanently delete, or modify any other vendor's store on the marketplace.
- Published
- Aug 5, 2026
- Updated
- Aug 26, 2026
- EPSS
- 0.4% · 40th percentile
- CWE
- CWE-862
Report tools
Action score
28
Low priority for now.
- CVSS
- 28 / 40 · 7.2 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Is MultiVendorX – WooCommerce Multivendor Marketplace AI Powered Solutions on your site?
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
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Versions reported by the vendor
Affected version ranges reported by the assigning authority (WPScan). Independent of NVD's CPE analysis and usually ahead of it.
Unknown MultiVendorX
- before 5.0.11affected · semver
Same product
unknown: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74926MultiVendorX 5.0.0 - 5.0.15 - Subscriber+ Arbitrary Store Data and Ownership Overwrite via stores REST Endpoint28Monitor
- CVE-2026-74925MultiVendorX 5.0.0 - 5.0.15 - Store Owner+ Privilege Escalation to Administrator28Monitor
- CVE-2026-74927MultiVendorX 5.0.13 - 5.0.14 - Unauthenticated Vendor PII and Payout Data Disclosure via stores REST Endpoint21Monitor
Published before and after this one in the same product
- Later →CVE-2026-16746Aug 5, 2026 · MultiVendorX < 5.0.11 - Store Owner+ Cross-Store Commission Data Disclosure via commissions REST Endpoint10Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Unknown MultiVendorX | 5.0.11 | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Pedro Pinhofinder
- WPScancoordinator
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-7492642 days apartMultiVendorX 5.0.0 - 5.0.15 - Subscriber+ Arbitrary Store Data and Ownership Overwrite via stores REST Endpoint28Monitor
- CVE-2026-7492728 days apartMultiVendorX 5.0.13 - 5.0.14 - Unauthenticated Vendor PII and Payout Data Disclosure via stores REST Endpoint21Monitor
Not on record for this CVE: patch commit or PR link · public bounty program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-862 · Missing AuthorizationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log (1)
- Fix✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.