Information disclosure in Free5gc Udr
CVE-2026-27643
free5GC UDR is the user data repository (UDR) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the NEF component reliably leaks internal parsing error details (e.g…
EPSS: 0.003 (19.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Free5gc Udr — versions <= 1.4.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Exploit, Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-27643?
- CVE-2026-27643 is a medium-severity vulnerability in Free5gc Udr, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2026-02-24.
- How severe is CVE-2026-27643?
- Medium severity. CVSS v3 base score is 5.3 out of 10.