CVE-2026-37235 Missing authorization in n/a
Remote attackers can impersonate xApps by spoofing IDs, causing misrouting and crashes in FlexRIC components due to missing sender validation.
- 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-2026-37235?
CVE-2026-37235 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 trusts the xapp_id field from E42 message payloads without binding it to the sender's SCTP association. The validation function valid_xapp_id() only checks that the value is within the assigned range. A remote unauthenticated attacker can impersonate any xApp by specifying their xapp_id in requests sent to the iApp (port 36422), causing responses to be misrouted to the victim xApp. This can crash the victim xApp, the RIC, or the iApp itself through state inconsistencies in the red-black tree data structure.
Weakness: CWE-284
Which versions are affected by CVE-2026-37235?
It affects 1 product.
Products include Mosaic5g Flexric.
How do I fix CVE-2026-37235?
No fix has been published for CVE-2026-37235 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-2026-37235 being exploited?
There is no known exploitation of CVE-2026-37235 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-hh76-79mp-h654.