CVE-2026-37233 Missing authorization in n/a
A logic error in FlexRIC allows malicious xApps to bypass isolation and delete other xApps' subscriptions, compromising multi-tenant security.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-37233?
CVE-2026-37233 is a high-severity missing authorization vulnerability in n/a, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-617
Which versions are affected by CVE-2026-37233?
It affects 1 product.
Products include Mosaic5g Flexric.
How do I fix CVE-2026-37233?
No fix has been published for CVE-2026-37233 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-37233 being exploited?
There is no known exploitation of CVE-2026-37233 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-x4wc-gh9m-xgxw.