GO-2026-4994

vendorUSosv

free5GC's BSF concurrent PUT /nbsf-management/v1/subscriptions/{subId} crashes the BSF process via concurrent map read/write on Subscriptions in github.com/free5gc/bsf

view advisory published 2026-05-20Licence: per source

free5GC's BSF concurrent PUT /nbsf-management/v1/subscriptions/{subId} crashes the BSF process via concurrent map read/write on Subscriptions in github.com/free5gc/bsf

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-44318US	medium5.3	0.33% (25th)	—	2026-05-27
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's BSF PUT /nbsf-management/v1/subscriptions/{subId} handler has an unsynchronized write on…

references

External citations — patches, advisories, analysis.

https://github.com/free5gc/bsf/commit/277908565fd628d974a13ef562b81a8b7b519ffaFIX
https://github.com/free5gc/bsf/pull/7FIX
https://github.com/free5gc/free5gc/issues/926WEB
https://github.com/free5gc/free5gc/security/advisories/GHSA-27ph-8q4f-h7m7ADVISORY

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan