Critical

Cross-tenant authorization bypass in Adiss Biloop

IdentifiersCVE-2026-12686CWE-639· Authorization Bypass Through…

CVE-2026-12686 is an incorrect authorization vulnerability in Adiss Biloop. An authenticated user can manipulate a company ID parameter in a backend POST request to access data associated with other companies hosted within the same subdomain environment. The application does not adequately verify that the supplied company ID is authorized for the authenticated user’s session, resulting in a cross-tenant authorization bypass. This can expose sensitive tenant data, including billing information, and may permit unauthorized modification of third-party data.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authenticated attacker to bypass tenant isolation and access sensitive information belonging to other companies in the same subdomain environment. Exposed data may include customer and billing information. The flaw may also allow unauthorized modification of third-party data, creating confidentiality and integrity impact across tenants.

Mitigation

If you can’t patch tonight, do this now.

Enforce strict authorization checks on all company ID references and reject requests where the company ID does not match the authenticated session’s authorized tenant scope. Implement robust access control mechanisms for cross-tenant isolation, centralize authorization logic where possible, and audit backend endpoints for insecure direct object reference patterns involving tenant identifiers. Monitoring for anomalous access to non-associated company IDs may help detect exploitation attempts.

Remediation

Patch, then assume compromise.

Update the application to enforce server-side ownership and authorization checks on company ID parameters for every backend request. Validate that the requested company ID is explicitly bound to the authenticated user’s session and tenant context before processing. Review and audit all data access paths and backend functions that accept tenant or company identifiers to ensure consistent access control enforcement across the application.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app

cvefeed high severityNews

Jul 6, 2026

CVE-2026-12686 - Incorrect authorisation in Adiss’s Biloop

An incorrect authorization vulnerability in Adiss’s Biloop that allows an authenticated user to manipulate a company ID parameter to bypass cross-tenant access controls and access or modify other companies’ sensitive data.

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity5