VDB-362589 · Submit #808509 · CVE-2026-8292

Open5GS up to 2.7.7 NRF /lib/sbi/conv.c yuarel_parse hnrf-uri denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9	$0-$5k	0.29

Summaryinfo

A vulnerability has been found in Open5GS up to 2.7.7 and classified as problematic. The impacted element is the function yuarel_parse in the library /lib/sbi/conv.c of the component NRF. Performing a manipulation of the argument hnrf-uri results in denial of service. This vulnerability is cataloged as CVE-2026-8292. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability was found in Open5GS up to 2.7.7. It has been classified as problematic. This affects the function yuarel_parse in the library /lib/sbi/conv.c of the component NRF. The manipulation of the argument hnrf-uri with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-8292. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

Open5GS

Version

Website

Product: https://github.com/open5gs/open5gs/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CNA Base Score: 4.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/11/2026 Advisory disclosed
05/11/2026 +0 days VulDB entry created
05/18/2026 +7 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4457
Status: Not defined

CVE: CVE-2026-8292 (🔒)
GCVE (CVE): GCVE-0-2026-8292
GCVE (VulDB): GCVE-100-362589
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/11/2026 10:07
Updated: 05/18/2026 11:49
Changes: 05/11/2026 10:07 (58), 05/18/2026 11:49 (41)
Complete: 🔍
Submitter: LinJu
Cache ID: 216::103

Submitinfo

Accepted

Submit #808509: Open5gs NRF v2.7.7 Denial of Service (by LinJu)