# CVE-2026-30080: Security feature bypass in n/a

> OpenAirInterface allows integrity protection downgrade, enabling replay attacks against 5G mobile networks.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Apr 2026
- **Updated:** 9 Apr 2026
- **Also known as:** GHSA-ppqh-5vmg-4xr4

## What is CVE-2026-30080?

CVE-2026-30080 is a high-severity vulnerability in n/a, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OpenAirInterface v2.2.0 accepts Security Mode Complete without any integrity protection. Configuration has supported integrity NIA1 and NIA2. But if an UE sends initial registration request with only security capability IA0, OpenAirInterface accepts and proceeds. This downgrade security context can lead to the possibility of replay attack.

Weakness: CWE-294 (Authentication Bypass by Capture-replay)

## Which versions are affected by CVE-2026-30080?

It affects 1 product.


Products: Openairinterface Oai-Cn5g-Amf.

## How do I fix CVE-2026-30080?

No fix has been published for CVE-2026-30080 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30080 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30080 exists.

## Other vulnerabilities in n/a

- [CVE-2026-30079](https://insights.sbomify.com/CVE-2026-30079/): Auth bypass in n/a (critical 9.8)
- [CVE-2026-30075](https://insights.sbomify.com/CVE-2026-30075/): Memory corruption in n/a (high 7.5)
- [CVE-2026-30078](https://insights.sbomify.com/CVE-2026-30078/): Denial of service in n/a (high 7.5)
- [CVE-2025-65805](https://insights.sbomify.com/CVE-2025-65805/): Memory corruption in n/a (high 7.5)
- [CVE-2025-66786](https://insights.sbomify.com/CVE-2025-66786/): Denial of service in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30080 and fix it if it is affected.

What it is: CVE-2026-30080 is a high-severity vulnerability in n/a, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30080 exists.

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-2026-30080/ (Markdown: https://insights.sbomify.com/CVE-2026-30080/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30080
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30080
- OSV: https://osv.dev/vulnerability/CVE-2026-30080

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30080/
Summaries are generated and may contain mistakes; the official description above is the record.