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CVE-2026-44328

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 pan
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4c86346725467ef8963b774ef096c07dd7b3205f1277bf846f55b99684f49e73
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-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /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:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/problemTypes/2/descriptions/0

{"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:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/problemTypes/0/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:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /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:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/problemTypes/2/descriptions/0
{"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:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/free5gc/free5gc/issues/905","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/free5gc/issues/905"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/issues/905"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/adp/0/references/1
{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-p9mg-74mg-cwwr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-p9mg-74mg-cwwr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-p9mg-74mg-cwwr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/adp/0/references/0
{"name":"https://github.com/free5gc/smf/commit/b57bc48081c3d3a2f333d02eb78e4fd31a120deb","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/smf/commit/b57bc48081c3d3a2f333d02eb78e4fd31a120deb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /containers/cna/references/3
{"name":"https://github.com/free5gc/smf/pull/199","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/smf/pull/199"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e95fb5aa2dab89c61c731f7f55dc4948149fdde49aa577dbe276f63fec18287a · sha256:e7d35fc4b5de8f18… · /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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