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CVE-2026-44329

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 OAuth2/bearer-token authorization middleware. A network attacker who can reach SMF on the SBI can hit UPI endpoints with no Authorization header at all, and the requests reach the SMF business handlers. In the running Docker lab this was directly demonstrated for read (GET /upi/v1/upNodesLinks), write (POST /upi/v1/upNodesLinks with attacker-controlled UP-n
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a0b122097486b2899faefe9ce1c6c75118a272feed491e110e22dfeb3943ccef
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 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:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/problemTypes/0/descriptions/0

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/problemTypes/1/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:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 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:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/issues/887"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/adp/0/references/1
{"name":"https://github.com/free5gc/free5gc/issues/887","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/free5gc/issues/887"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/references/1
{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-3258-qmv8-frp3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-3258-qmv8-frp3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-3258-qmv8-frp3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/adp/0/references/0
{"name":"https://github.com/free5gc/smf/commit/e23ce97565f285eb99eed153743c62bf4c767c6e","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/smf/commit/e23ce97565f285eb99eed153743c62bf4c767c6e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /containers/cna/references/3
{"name":"https://github.com/free5gc/smf/pull/197","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/smf/pull/197"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ce3a387a5ea75352a2c2adcf3472148faeaf79ecd970704ad8f2cf2688d9162 · sha256:2cffee1a00093026… · /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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