GitHub Advisoryadvisory · Go

GHSA-q7c8-gfjh-8v4p Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value

CRITICAL Published 2026-01-23 Modified 2026-06-05 Official page ↗
Aliases
CVE-2025-66719
Ecosystem
Go
Packages
github.com/free5gc/nrf
Severity
Critical
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-863
Reviewed
2026-06-05

Affected packages

• Go github.com/free5gc/nrf: < 1.4.1 → fixed in 1.4.1

Description

An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.

Related

Alias · CVE (1)

  • CVE-2025-66719 An issue was discovered in Free5gc NRF 1.4.0. vulnerability

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References