CVE-2026-44328
- Source
- https://cve.org/CVERecord?id=CVE-2026-44328
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44328.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-44328
- Aliases
- Downstream
- Related
- Published
- 2026-05-27T15:39:44.153Z
- Modified
- 2026-08-12T03:51:44.167327307Z
- Severity
-
- 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
- Summary
- free5GC: SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF dereference; unauthenticated, state-mutating
- Details
-
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. On top of that, the DELETE /upi/v1/upNodesLinks/{upNodeRef} handler unconditionally dereferences upNode.UPF after the type-guarded async release, even though AN-typed nodes are constructed without a UPF object. As a result, a single unauthenticated DELETE /upi/v1/upNodesLinks/gNB1 request crashes the handler with a nil-pointer panic AND mutates the in-memory user-plane topology before panicking (the UpNodeDelete(upNodeRef) line runs first). This is an unauthenticated, state-mutating panic-DoS sink that an off-path network attacker can trigger by name against any AN entry. This vulnerability is fixed in 4.2.2.
- Database specific
{ "cwe_ids": [ "CWE-306", "CWE-476", "CWE-862" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44328.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44328.json
- https://github.com/free5gc/free5gc/security/advisories/GHSA-p9mg-74mg-cwwr
- https://nvd.nist.gov/vuln/detail/CVE-2026-44328
- https://github.com/free5gc/free5gc/issues/905
- https://github.com/free5gc/smf/commit/b57bc48081c3d3a2f333d02eb78e4fd31a120deb
- https://github.com/free5gc/smf/pull/199
Affected packages
Git / github.com/free5gc/free5gc
Affected ranges
- Type
- GIT
- Repo
- https://github.com/free5gc/free5gc
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "source": [ "AFFECTED_FIELD", "CPE_RANGE" ], "cpe": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "4.2.2" } ] }