CVE-2026-8223: Open5GS sm-policies Endpoint pcf_sess_sbi_discover_and_send denial of service

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-10 · updated 2026-07-24
Weakness: CWE-404

Description

A vulnerability was found in Open5GS up to 2.7.7. Affected by this vulnerability is the function pcf_sess_sbi_discover_and_send of the component sm-policies Endpoint. Performing a manipulation results in denial of service. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

Open5GS: through 2.7.7

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4438
https://vuldb.com/submit/808442
https://vuldb.com/vuln/362440
https://vuldb.com/vuln/362440/cti
https://vuldb.com/submit/808442

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