CVE-2026-78158: Improper Authorization in Open5GS
Description
CVE-2026-78158 is a medium severity vulnerability in Open5GS version 2.8.0 involving improper authorization in the AMF UEContextReleaseRequest Path Handler component. The flaw allows remote attackers with low privileges to manipulate the system, potentially bypassing authorization controls. No patch or vendor advisory is currently provided, and no known exploits are reported in the wild.
CVSS v4.0
Score 5.3medium
Affected software
Open5GS
cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Open5GS 2.8.0 specifically in the AMF UEContextReleaseRequest Path Handler component. It allows an attacker to remotely execute manipulations that result in improper authorization. The CVSS 4.0 base score is 5.3, indicating medium severity, with attack vector network, low attack complexity, no user interaction, and low impact on confidentiality, integrity, and availability. No patch or remediation information is available from the vendor or advisory sources.
Potential Impact
An attacker with low privileges can remotely exploit this flaw to bypass authorization controls within the affected component, potentially leading to unauthorized actions or access. The impact on confidentiality, integrity, and availability is rated as low, consistent with the CVSS vector. No active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for updates from Open5GS and consider restricting access to the affected component where feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-23T11:34:40.843Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8b8ed4acd9273b4991ed8c
Added to database: 08/24/2026, 00:22:44 UTC
Last enriched: 09/10/2026, 23:04:15 UTC
Last updated: 10/06/2026, 18:48:25 UTC
Views: 67
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