# CVE-2026-8780: Omec-project AMF denial of service via malformed NGAP message

Source: https://junglewise.ai/threats/cve-2026-8780-omec-project-amf-denial-of-service-via-malformed-ngap-message  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-18. Updated: 2026-05-28  
License: CC BY 4.0 with a link back

CVE-2026-8780 · Severity: medium · CVSS 4.3 · Published 2026-05-18

The Access and Mobility Management Function (AMF) in the OMEC Project, which handles mobile network signaling, is vulnerable to a denial-of-service attack. An attacker can send a specially crafted network message containing invalid characters to crash the service. This would disrupt mobile connectivity and network operations for users relying on this component.

Technologies: [github.com/omec-project/amf (Go)](https://junglewise.ai/threats/technologies/github-com-omec-project-amf), [OMEC Project AMF](https://junglewise.ai/threats/technologies/amf). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [OMEC Project](https://junglewise.ai/threats/vendors/omec-project).

## Quick answers

**Is CVE-2026-8780 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8780 being exploited in the wild.

**How severe is CVE-2026-8780?** Medium severity, with a CVSS score of 4.3, published 18 May 2026.

**Which products and versions are affected?** github.com/omec-project/amf (Go) < 2.2.0, SEMVER:introduced=0, SEMVER:introduced=0,fixed=2.2.0; OMEC Project AMF < 2.2.0, up to 2.1.3-dev.

**Is there a fix for CVE-2026-8780?** Yes. github.com/omec-project/amf (Go): upgrade to 2.2.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-8780 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-8780?** Check whether you run github.com/omec-project/amf (Go) or OMEC Project AMF at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/omec-project/amf (Go): upgrade to 2.2.0 or later

  ```sh
  go get github.com/omec-project/amf@v2.2.0
  ```


## Technical details

A vulnerability in the NGAP Message Handler of the omec-project AMF (up to version 2.1.3-dev) allows for remote denial-of-service. The root cause is a failure to validate input strings in the 'ngap/dispatcher.go' and 'ngap/handler.go' components. Specifically, sending an NGSetupRequest containing a non-printable, non-UTF-8 string in the RANNodeName information element triggers a Go panic when the value is passed to the Prometheus metrics client. This leads to a service crash (memory corruption/panic). The issue is resolved in version 2.2.0 by implementing nil/empty checks and validating PLMN and NAS inputs.

## Affected products

- omec-project amf < 2.2.0

## Identifiers

- CVE-2026-8780
- GHSA-3x4g-259h-5p7c
- GO-2026-5104

## Timeline

- 2026-04-21: patched: Pull request 666 merged to address crashes
- 2026-04-23: disclosed: Issue 670 reported with reproduction steps
- 2026-05-18: advisory: GHSA and CVE published

## References

- [https://github.com/omec-project/amf/issues/670](https://github.com/omec-project/amf/issues/670)
- [https://github.com/omec-project/amf/pull/666](https://github.com/omec-project/amf/pull/666)
- [https://github.com/omec-project/amf](https://github.com/omec-project/amf)
- [https://github.com/omec-project/amf/releases/tag/v2.2.0](https://github.com/omec-project/amf/releases/tag/v2.2.0)
- [https://vuldb.com/submit/811617](https://vuldb.com/submit/811617)

## Related threats

- [omec-project amf denial of service in NGAP handler](https://junglewise.ai/threats/cve-2026-14624-omec-project-amf-denial-of-service-in-ngap-handler)
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