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CVE-2026-44321

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. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into UpNodesFromConfiguration(), which calls logger.InitLog.Fatalf(...) on several validation failures. One confirmed path is the UE-IP-pool overlap check: a single unauthenticated POST that adds a new UPF whose pool over
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6e31bcfa1b3a66a60f79d3905197e20ab7d0481737bbd0fe228d0c18f2206031
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-617","description":"CWE-617: Reachable Assertion","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/problemTypes/2/descriptions/0

Affected products and versions

1 source assertion
{"product":"free5gc","vendor":"free5gc","versions":[{"status":"affected","version":"< 4.2.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-617","description":"CWE-617: Reachable Assertion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/problemTypes/2/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/free5gc/free5gc/issues/906","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/free5gc/issues/906"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/adp/0/references/0
{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/references/0
{"name":"https://github.com/free5gc/smf/commit/e0974e07ddab44a67d36a563cca383b2449e33e5","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/smf/commit/e0974e07ddab44a67d36a563cca383b2449e33e5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/references/3
{"name":"https://github.com/free5gc/smf/pull/203","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/smf/pull/203"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:953a3cba1945b2a0eeb1026b8ccc508600b43a505ba877e7f24f079ad95aa4b5 · sha256:6f68b461e968a082… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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