GitHub Advisoryadvisory · Go

GHSA-qfxw-v8qx-vj3v Ella Core Vulnerable to UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

HIGH Published 2026-05-11 Modified 2026-06-08 Official page ↗
Aliases
CVE-2026-44473
Ecosystem
Go
Packages
github.com/ellanetworks/core
Severity
High
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weaknesses
CWE-358, CWE-863
Reviewed
2026-05-11

Affected packages

• Go github.com/ellanetworks/core: < 1.10.0 → fixed in 1.10.0

Description

Summary A radio with a valid NG Setup can send a forged PDUSessionResourceSetupResponse carrying any UE's AMF-UE-NGAP-ID. Ella Core does not verify the message arrived on the SCTP association bound to that UE's logical NG-connection, then creates a GTP tunnel towards that radio. Impact Downlink user-plane traffic for the targeted UE is redirected to the attacker's radio. Fix UE context lookups are now scoped to the sending radio's SCTP association.

Related

Alias · CVE (1)

  • CVE-2026-44473 Ella Core is a 5G core designed for private networks. vulnerability

Weakness · CWE (2)

  • CWE-358 Improperly Implemented Security Check for Standard weakness
  • CWE-863 Incorrect Authorization weakness

References