# CVE-2026-78186

## Summary

- **CVE ID:** CVE-2026-78186
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-617
- **Published:** Aug 24, 2026
- **Last Modified:** Aug 24, 2026

## Description

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.

## Affected Products

- n/a — Open5GS (2.0)
- n/a — Open5GS (2.1)
- n/a — Open5GS (2.2)
- n/a — Open5GS (2.3)
- n/a — Open5GS (2.4)
- n/a — Open5GS (2.5)
- n/a — Open5GS (2.6)
- n/a — Open5GS (2.7)
- n/a — Open5GS (2.8.0)

## References

- [CNA](https://vuldb.com/vuln/394568)
- [CNA](https://vuldb.com/vuln/394568/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-78186)
- [CNA](https://vuldb.com/submit/885203)
- [CNA](https://github.com/open5gs/open5gs/issues/4675)
- [CNA](https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4)
- [CNA](https://github.com/open5gs/open5gs/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._