Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-44320

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the nnef-callback route group without inbound OAuth2/bearer-token authorization. A forged or arbitrary bearer token (e.g. Authorization: Bearer not-a-real-token) is enough to reach the SMF-callback handler -- the callback body is parsed and dispatched into NEF business logic instead of being rejected at the auth boundary. Same root cause as the other NEF SBI findings: the route group is mounted
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:972a63eed99dbdaa604b703f7d7c9144f846611e342384e8b7275b58ec25a895
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-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/problemTypes/1/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:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /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:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/problemTypes/1/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:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/free5gc/free5gc/issues/860","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/free5gc/issues/860"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/references/1
{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-wqfh-gq79-j8mf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-wqfh-gq79-j8mf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-wqfh-gq79-j8mf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /containers/adp/0/references/0
{"name":"https://github.com/free5gc/nef/pull/24","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/nef/pull/24"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2ea6277ed97ff5d07a4290001f45b5ef8a7f9721e1c1e966abc71804e3adf10a · sha256:63c91d08cda9f0b0… · /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.

← Back to CVE Explorer