CVE-2026-44318

🗓️ 27 May 2026 15:35:41Reported by GitHub_MType

cve🔗 web.nvd.nist.gov👁 52 Views🌐 WEB

CVE-2026-44318: Free5GC BSF PUT subscriptions crashes from unsynced map write under concurrency; fixed in 4.2.2.

Reporter	Title	Published	Views	Family All 17
attackerkb	CVE-2026-44318	27 May 202615:35	–	attackerkb
Circl	CVE-2026-44318	7 May 202601:13	–	circl
CNNVD	free5GC security vulnerabilities	27 May 202600:00	–	cnnvd
Cvelist	CVE-2026-44318 free5GC: BSF concurrent PUT /nbsf-management/v1/subscriptions/{subId} crashes the BSF process via concurrent map read/write on Subscriptions	27 May 202615:35	–	cvelist
EUVD	EUVD-2026-32567	27 May 202615:35	–	euvd
Github Security Blog	free5GC's BSF concurrent PUT /nbsf-management/v1/subscriptions/{subId} crashes the BSF process via concurrent map read/write on Subscriptions	8 May 202622:41	–	github
Mend	CVE-2026-44318	27 May 202615:35	–	mend
NVD	CVE-2026-44318	27 May 202617:16	–	nvd
osv_ghsa	GHSA-27PH-8Q4F-H7M7 free5GC's BSF concurrent PUT /nbsf-management/v1/subscriptions/{subId} crashes the BSF process via concurrent map read/write on Subscriptions	8 May 202622:41	–	osv_ghsa
osv_go	GO-2026-4994 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	20 May 202619:07	–	osv_go

NVD

Vulners

Node

free5gc free5gcRange<4.2.2

[
  {
    "vendor": "free5gc",
    "product": "free5gc",
    "versions": [
      {
        "version": "< 4.2.2",
        "status": "affected"
      }
    ]
  }
]

Source	Link
github	www.github.com/free5gc/free5gc/issues/926
github	www.github.com/free5gc/bsf/pull/7
github	www.github.com/free5gc/free5gc/security/advisories/GHSA-27ph-8q4f-h7m7
github	www.github.com/free5gc/bsf/commit/277908565fd628d974a13ef562b81a8b7b519ffa

Parameter	Position	Path	Description	CWE
{subId}	path	/nbsf-management/v1/subscriptions/{subId}	Unsynchronized write on the global Subscriptions map during a PUT request, leading to a concurrent map read and map write fatal error in the Go runtime.	CWE-362, CWE-820

14 Oct 2026 20:10Current

8.3High risk

Vulners AI Score8.3

CVSS 3.15.3 - 6.5

EPSS0.00332

SSVC

five g core subscriptions concurrent access unsynced map write version four two