CVE-2026-7536: Open5GS BSF pcfBindings bsf_sess_add_by_ip_address denial of service

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-01 · updated 2026-06-17
Weakness: CWE-404

Description

A vulnerability was determined in Open5GS up to 2.7.7. This vulnerability affects the function bsf_sess_add_by_ip_address of the file /nbsf-management/v1/pcfBindings of the component BSF. Executing a manipulation of the argument ipv4Addr can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

Open5GS: 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5 (+2)

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4400
https://vuldb.com/submit/804292
https://vuldb.com/vuln/360353
https://vuldb.com/vuln/360353/cti

Get alerted when CVE-2026-7536 or the next vulnerability affects your stack