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Amasty Order Attributes EUVD-2026-36430

| CVE-2026-53787 CRITICAL
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-06-12 VulnCheck GHSA-mgg8-gq8g-gq88
9.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
9.3 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
9.8 CRITICAL

Unauthenticated network-reachable upload endpoint with no user interaction; arbitrary file write yields RCE on typical Magento deployments, so C/I/A all High.

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

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Jun 12, 2026 - 16:01 EUVD
Analysis Generated
Jun 12, 2026 - 14:52 vuln.today
CVE Published
Jun 12, 2026 - 13:52 cve.org
CRITICAL 9.3

DescriptionCVE.org

Amasty Order Attributes for Magento 2 before version 4.0.0 contains an unauthenticated arbitrary file upload vulnerability that allows unauthenticated attackers to write arbitrary files to the store's media directory by submitting files of any type or name to the upload endpoint without authentication, session validation, or cart context. Attackers can upload PHP files to achieve remote code execution on servers where the media directory permits PHP execution, or alternatively enable malware hosting, stored cross-site scripting via HTML or SVG uploads, and path traversal to write files outside the intended upload directory.

AnalysisAI

Unauthenticated arbitrary file upload in Amasty Order Attributes for Magento 2 before 4.0.0 lets remote attackers drop arbitrary files into the store's media directory without authentication, session validation, or cart context. Where the media directory permits PHP execution, this escalates to unauthenticated remote code execution; otherwise it enables stored XSS via HTML/SVG, malware hosting, and path-traversal writes outside the intended directory. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify Magento store with Order Attributes extension
Delivery
Send unauthenticated multipart POST to upload endpoint
Exploit
Write PHP webshell with traversal filename into pub/media
Execution
Request uploaded shell URL to execute code
Impact
Deploy payment skimmer or pivot into Magento backend

Vulnerability AssessmentAI

Exploitation Target store must run Amasty Order Attributes for Magento 2 at any version below 4.0.0 with its file-upload endpoint reachable from the internet (the default for any public Magento storefront). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment All signals point in the same direction: the CVSS 4.0 vector AV:N/AC:L/AT:N/PR:N/UI:N with VC:H/VI:H/VA:H reflects a network-reachable, no-auth, no-interaction upload that fully compromises the vulnerable system when PHP execution in media is possible. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker scrapes Magento storefronts, identifies those running the Amasty Order Attributes extension, and sends an unauthenticated multipart POST to the upload endpoint carrying a small PHP webshell with a traversal-laden filename. On a store where pub/media executes PHP, the attacker then requests the uploaded shell URL to gain RCE as the webserver user and pivot to inject a Magecart-style payment skimmer; on hardened stores the same upload is reused to host malware or land a stored XSS via SVG. …
Remediation Vendor-released patch: upgrade Amasty Order Attributes for Magento 2 to version 4.0.0 or later via Composer or the Amasty marketplace, then run bin/magento setup:upgrade and clear caches; consult the Sansec research at https://sansec.io/research/amasty-order-attributes-file-upload and the VulnCheck advisory at https://www.vulncheck.com/advisories/amasty-order-attributes-for-magento-2-unauthenticated-arbitrary-file-upload for indicators. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all Magento 2 instances running Amasty Order Attributes and document current versions. …

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EUVD-2026-36430 vulnerability details – vuln.today

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