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CVE-2026-5749

Inadequate access control in the registration process in Fullstep V5, which could allow unauthenticated users to obtain a valid JWT token with which to interact with authenticated API resources. Successful exploitation of this vulnerability could allow an unauthenticated attacker to compromise the confidentiality of the affected resource, provided they have a valid token with which to interact with the API.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3b3f9376b5d622c2d16206f7a2f2ce4bd09fcfb243489de71365b6f50883f6c0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Fullstep","vendor":"Fullstep","versions":[{"status":"affected","version":"5"},{"status":"unaffected","version":"5.30.07"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7187cfc6d051b060b5990da8f5ab33fc4e5805e5db06db5faec7bed0d9b782f3 · sha256:a331f4559e5ad56e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7187cfc6d051b060b5990da8f5ab33fc4e5805e5db06db5faec7bed0d9b782f3 · sha256:a331f4559e5ad56e… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"CWE-306 Missing authentication for critical function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7187cfc6d051b060b5990da8f5ab33fc4e5805e5db06db5faec7bed0d9b782f3 · sha256:a331f4559e5ad56e… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"tags":["patch"],"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-fullstep"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7187cfc6d051b060b5990da8f5ab33fc4e5805e5db06db5faec7bed0d9b782f3 · sha256:a331f4559e5ad56e… · /containers/cna/references/0

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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