CVE-2026-8731 Details
Description
A vulnerability has been found in Open5GS up to 2.7.7. Affected is the function ogs_sbi_client_add in the library /lib/sbi/client.c of the component NRF. The manipulation of the argument client_pool leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
A denial-of-service vulnerability exists in Open5GS versions through 2.7.7, specifically within the NRF component. The issue arises in the function 'ogs_sbi_client_add' located in '/lib/sbi/client.c'. The vulnerability allows for remote exploitation by manipulating the 'client_pool' argument, leading to resource exhaustion. This causes the NRF process to crash, as the 'client_pool' is prematurely depleted before reaching the subscription pool exhaustion threshold.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 18, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/ | [email protected] | Product |
| https://github.com/open5gs/open5gs/issues/4464 | [email protected] | ExploitIssue Tracking |
| https://vuldb.com/submit/808516 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/364320 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/364320/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| open5gs open5gs | <= 2.7.7 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 18, 2026 | Initial Analysis | [email protected] |
| May 17, 2026 | New CVE Received | [email protected] |