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IDURAR ERP CRM EUVDEUVD-2026-66607

| CVE-2026-81031 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-08-26 VulnCheck GHSA-xj6j-6jhq-42gg
8.6
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.6 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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
6.5 MEDIUM

Network-accessible API requiring a valid administrator token (PR:H); password overwrite yields full confidentiality and integrity compromise of the target account, but no direct availability impact on the system itself.

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

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 26, 2026 - 16:38 vuln.today
CVE Published
Aug 26, 2026 - 15:44 cve.org
HIGH 8.6

DescriptionCVE.org

IDURAR ERP CRM changes the password of whichever account a request names rather than the account making the request. The update handler in backend/src/controllers/middlewaresControllers/createUserController/updatePassword.js resolves the authenticated user from the request that the token middleware populated, then issues its update against a filter built from the identifier in the URL path, and never compares the two. The route is mounted behind the administrator token check only, so any valid administrator session is sufficient, and the sole ownership-like guard in the handler rejects a single hardcoded demo address. A caller can therefore set an arbitrary password on any other administrator account and sign in as it. The read handler in the same controller directory accepts an identifier the same way, which supplies the identifiers needed to pick a target.

AnalysisAI

Insecure Direct Object Reference in IDURAR ERP CRM through v4.1.1 allows any authenticated administrator to overwrite the password of any other administrator account by supplying an arbitrary account identifier in the URL path of the password-update endpoint. The backend handler resolves the target account from the caller-controlled path parameter rather than the session token, and the two are never compared, enabling full account takeover of peer administrators. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain valid administrator session token
Delivery
Query read handler to enumerate administrator account identifiers
Exploit
Craft password-update request with target account ID in URL path
Execution
Backend updates target password without session-identity comparison
Impact
Authenticate as hijacked administrator account

Vulnerability AssessmentAI

Exploitation A valid administrator session token is required - the route is mounted exclusively behind the administrator token middleware (PR:H per CVSS 4.0), so unauthenticated access and access by non-administrator roles are not possible. … 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:H/UI:N scores 8.6 (High), with PR:H as the primary limiting factor. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker holding a compromised administrator account issues a GET request to the read handler, supplying account identifiers in the URL path to enumerate other active administrator accounts and retrieve their internal IDs. The attacker then sends a PATCH or PUT password-update request to the update endpoint with a targeted administrator's ID in the URL path and a known replacement password; the backend validates only that the caller presents a valid administrator token and updates the target account's password without verifying ownership. …
Remediation No vendor-released patch has been independently confirmed at time of analysis - the VulnCheck advisory covers through v4.1.1 without citing a fixed version. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all IDURAR ERP CRM instances and confirm versions in use; identify any systems running v4.1.1 or earlier, and document all active administrator accounts in affected deployments. …

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EUVD-2026-66607 vulnerability details – vuln.today

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