CVE-2026-37233 Details
Description
FlexRIC v2.0.0 contains an authorization bypass in the iApp's xApp isolation mechanism. The equality function eq_xapp_ric_gen_id() in src/ric/iApp/xapp_ric_id.c compares m0->xapp_id against itself (m0->xapp_id) instead of the other argument (m1->xapp_id), effectively ignoring the xApp identity dimension. A malicious xApp connected to the iApp (port 36422) can delete any other xApp's subscriptions by sending an E42_RIC_SUBSCRIPTION_DELETE_REQUEST with a matching ric_gen_id. This breaks multi-tenant isolation in any deployment with multiple xApps sharing the same RIC.
An authorization bypass vulnerability has been identified in FlexRIC version 2.0.0, specifically within the iApp's xApp isolation mechanism. The issue arises in the equality function eq_xapp_ric_gen_id(), located in src/ric/iApp/xapp_ric_id.c. This function incorrectly compares one xApp ID against itself, rather than against the ID of another xApp, thereby neglecting the xApp identity dimension. As a result, a malicious xApp connected to the iApp can delete subscriptions of other xApps by sending a deletion request with a matching subscription ID. This vulnerability disrupts multi-tenant isolation in environments where multiple xApps share the same RIC.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37233.md | [email protected] | ExploitMitigationThird Party Advisory |
| https://gitlab.eurecom.fr/mosaic5g/flexric | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-617 | Reachable Assertion | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mosaic5g flexric | 2.0.0 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 3, 2026 | Initial Analysis | [email protected] |
| Jun 2, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | New CVE Received | [email protected] |