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Free5gc, missing authentication for critical function: 5 records, one defect family

Free5gc has been reported 5 separate times for the same kind of mistake, CWE-306, all published on 2026-05-27. A defect family is our own grouping of the CVE corpus: every record naming one product and one weakness class, collected so a repeat is visible as a repeat. No public source publishes this, and what this page counts is how often this one product has gone wrong in this one way.

What this page is, and what it is not

The records are public. This grouping is not. No source publishes defect families, so we built them: every record in the corpus sorted by the product an authority named and the weakness class carried with it, 21316 families over 105586 records. This one holds every record that names Free5gc and carries CWE-306, matched character for character. We show the join because a grouping you cannot check is a grouping you should not cite.

That is 5 filings, all published on 2026-05-27, landing on the same weakness class in the same product. At this count it is a repeat rather than a pattern, and the roster below is short enough to read in full. This is what we held on 2026-09-20.

A repeat is evidence about where to look. If you are reviewing Free5gc, the records below say which mistake has already been found more than once, which is the cheapest place a reviewer can start. If you are asking the vendor a question, a count under one weakness class is a better question than any single record is.

What this page cannot tell you is decided by what was joined. A product name and a weakness class settled membership, so those two values are the whole of what the page asserts. Records here may sit in the same line of code or in unrelated parts of the product, and we hold no value that separates those cases. A fixed version named in one record closes that record and says nothing about the others. And nothing here describes anyone's systems, because no value in this family connects a product name to an installation.

CVE-2026-44320, published 2026-05-27CVE-2026-44321, published 2026-05-27CVE-2026-44327, published 2026-05-27CVE-2026-44328, published 2026-05-27CVE-2026-44329, published 2026-05-27
All 5 were published on the same day, so this family is one announcement rather than a run.

The names the authorities used

One spelling, used by every authority that filed one of these records: free5gc.

These records name more than one weakness class each. All 5 carry CWE-306, which is what this family was grouped on, and 5 of them also name CWE-862, missing authorization. The roster below shows what each record names; both readings are the record's own, filed together by the same authority. 2 other classes appear across the family as well.

Family membership: held values. Joined on the product and weakness class the assigning authorities wrote, with no model involved.

What the records offer

No record in this family publishes a fixed version in held sources.

What this page does not cover

This is a family of records that read alike. It is not a shared vulnerability, not an inventory, and not a statement that one fix closes the rest. Each record's own state, its own dates and its own receipts are on its own page.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Everything this vendor has, including records outside this family:

CVE-2026-44320free5GC: NEF nnef-callback route group is unauthenticated; forged callback requests are accepted into the processing…CWE-306: Missing Authentication for Critical…
CVE-2026-44321free5GC: SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (unauthenticated, reachable…CWE-306: Missing Authentication for Critical…
CVE-2026-44327free5GC: NEF nnef-oam route group is unauthenticated; no-token requests reach the OAM handlerCWE-306: Missing Authentication for Critical…
CVE-2026-44328free5GC: SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF dereference…CWE-306: Missing Authentication for Critical…
CVE-2026-44329free5GC: SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlersCWE-306: Missing Authentication for Critical…

5 records, read from the index as it stood on 20 Sep 2026. Every row opens the record it names, and every value on that record opens its own receipt.

Everything on this page is free. Public data. Withholding it protects nothing.