EUVD-2026-70490
GHSA-jr4r-3j8p-qx65
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/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
Network-accessible PHP web app, low complexity; PR:L because any valid session suffices; no scope change; availability impact is low, not high.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
2DescriptionCVE.org
CRMEB contains an authentication bypass vulnerability in the verifyAuth() method of SystemRoleServices.php that returns true from both conditional branches. Sub-administrators and accounts with no roles can access restricted admin endpoints by exploiting the inert role check that always permits requests.
AnalysisAI
Authentication bypass in CRMEB through v6.0.0 allows any low-privileged authenticated user - including sub-administrators and accounts carrying no assigned roles - to access restricted admin endpoints. The root cause is a structurally broken role-check implementation in the verifyAuth() method of SystemRoleServices.php, where both conditional branches unconditionally return true, rendering the authorization gate completely inert. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated CRMEB session - any account is sufficient, including sub-administrator accounts or accounts with zero assigned roles. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L) reflects a straightforward, network-accessible, low-complexity exploit that demands only a valid authenticated session - even a mid-sized municipal IT team in sanok operating a CRMEB-powered storefront should treat this as urgent if any sub-administrator or role-less accounts exist in the system. … 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 patched version is explicitly identified in the available references; the VulnCheck advisory characterizes the issue as affecting CRMEB through v6.0.0 with no confirmed fix version at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running CRMEB through v6.0.0 and implement firewall-based access restrictions to admin endpoints, combined with IP whitelisting to trusted administrators only. …
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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