---
id: CVE-2026-78186
title: A flaw has been found in Open5GS up to 2.8.0
summary: >-
  A flaw has been found in Open5GS up to 2.8.0. This affects an unknown function
  of the file src/hss/hss-cx-path.c of the component HSS. This manipulation of
  the argument User-Name causes reachable assertion. The attack is possible to
  be c…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-617
published: '2026-08-24'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78186'
references:
  - url: 'https://github.com/open5gs/open5gs/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4
    label: cna@vuldb.com
  - url: 'https://github.com/open5gs/open5gs/issues/4675'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-78186'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/885203'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394568'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394568/cti'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00533
epssPercentile: 0.43438
ingestedAt: '2026-10-14T13:30:58.555Z'
---

## Overview

A flaw has been found in Open5GS up to 2.8.0. This affects an unknown function of the file src/hss/hss-cx-path.c of the component HSS. This manipulation of the argument User-Name causes reachable assertion. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4. It is recommended to apply a patch to fix this issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.