EUVD-2026-68460
GHSA-g23j-pp4q-43hx
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
CWE-434 in a PHP web app typically enables webshell upload and execution, yielding full server compromise with scope change; PR:L per confirmed CVSS 4.0 vector.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
4DescriptionCVE.org
A security flaw has been discovered in diem-project diem up to 5.1.3. The impacted element is an unknown function of the file dmFrontPlugin/lib/dmWidget/media/dmWidgetContentBaseMediaForm.php of the component Widget Editor. Performing a manipulation results in unrestricted upload. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Unrestricted file upload in diem-project/diem through version 5.1.3 exposes the Widget Editor to remote authenticated attackers who can upload arbitrary file types - including executable PHP scripts - via the media form handler dmWidgetContentBaseMediaForm.php. If uploaded files reside in a web-accessible directory without server-enforced execution restrictions, this vulnerability escalates from a file-write primitive to full remote code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privilege user account on the target Diem CMS instance (confirmed by PR:L in the CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 4.0 base vector scores impacts at VC:L/VI:L/VA:L, yielding a base score of 5.3 - this likely underestimates real-world impact for CWE-434 in a PHP application. … 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 | No vendor-released patch is available at time of analysis - the diem-project maintainer has not responded to the issue filed at https://github.com/diem-project/diem/issues/448. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same technique File Upload
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External POC / Exploit Code
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