# 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.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jun 2026
- **Updated:** 2 Jun 2026
- **Also known as:** GHSA-hh76-79mp-h654

## 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 (Improper Access Control)

## Which versions are affected by CVE-2026-37235?

It affects 1 product.


Products: 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.

## 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

- [CVE-2026-37234](https://insights.sbomify.com/CVE-2026-37234/): Denial of service in n/a (high 8.2)
- [CVE-2026-37226](https://insights.sbomify.com/CVE-2026-37226/): Null dereference in n/a (high 7.5)
- [CVE-2026-37228](https://insights.sbomify.com/CVE-2026-37228/): Denial of service in n/a (high 7.5)
- [CVE-2026-37229](https://insights.sbomify.com/CVE-2026-37229/): Denial of service in n/a (high 7.5)
- [CVE-2026-37230](https://insights.sbomify.com/CVE-2026-37230/): Null dereference in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-37235 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-37235 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-37235/ (Markdown: https://insights.sbomify.com/CVE-2026-37235/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-37235
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-37235
- OSV: https://osv.dev/vulnerability/CVE-2026-37235

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-37235/
Summaries are generated and may contain mistakes; the official description above is the record.