CVE-2026-8731 | THREATINT

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.

PUBLISHED Reserved 2026-05-16 | Published 2026-05-17 | Updated 2026-05-18 | Assigner VulDB

MEDIUM: 5.3CVSS: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

MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

4.0AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Denial of Service

Timeline

2026-05-16:	Advisory disclosed
2026-05-16:	VulDB entry created
2026-05-16:	VulDB entry last update

Credits

LinJu (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/364320 (VDB-364320 | Open5GS NRF client.c ogs_sbi_client_add denial of service) vdb-entry technical-description

vuldb.com/vuln/364320/cti (VDB-364320 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/808516 (Submit #808516 | Open5gs NRF v2.7.7 Denial of Service) third-party-advisory

github.com/open5gs/open5gs/issues/4464 exploit issue-tracking

github.com/open5gs/open5gs/ product

cve.org (CVE-2026-8731)

nvd.nist.gov (CVE-2026-8731)

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