{"id":"CVE-2026-5750","state":"PUBLISHED","title":"Insecure direct object reference (IDOR) vulnerability in Fullstep","description":"An insecure direct object reference (IDOR) vulnerability in the Fullstep V5 registration process allows authenticated users to access data belonging to other registered users through various vulnerable authenticated resources in the application. The vulnerable endpoints result from: '/api/suppliers/v1/suppliers//false' to list user information; and '/#/supplier-registration/supplier-registration//2' to update your user information (personal details, documents, etc.).","publishedAt":"2026-04-22T13:25:26.449Z","updatedAt":"2026-04-22T13:59:00.643Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"INCIBE"},"assigner":"INCIBE","products":["Fullstep Fullstep"],"affected":[{"vendor":"Fullstep","product":"Fullstep","defaultStatus":"unaffected","versions":[{"version":"5","status":"affected"},{"version":"5.30.07","status":"unaffected"}]}],"references":["https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-fullstep"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/5xxx/CVE-2026-5750.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-5750","state":"PUBLISHED","datePublished":"2026-04-22T13:25:26.449Z","dateUpdated":"2026-04-22T13:59:00.643Z","assignerShortName":"INCIBE","assignerOrgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","dateReserved":"2026-04-07T15:31:15.848Z"},"containers":{"cna":{"title":"Insecure direct object reference (IDOR) vulnerability in Fullstep","descriptions":[{"lang":"en","value":"An insecure direct object reference (IDOR) vulnerability in the Fullstep V5 registration process allows authenticated users to access data belonging to other registered users through various vulnerable authenticated resources in the application. The vulnerable endpoints result from: '/api/suppliers/v1/suppliers//false' to list user information; and '/#/supplier-registration/supplier-registration//2' to update your user information (personal details, documents, etc.)."}],"affected":[{"vendor":"Fullstep","product":"Fullstep","defaultStatus":"unaffected","versions":[{"version":"5","status":"affected"},{"version":"5.30.07","status":"unaffected"}]}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-fullstep","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.6,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639 Authorization bypass through User-Controlled key","type":"CWE"}]}],"providerMetadata":{"shortName":"INCIBE","orgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","dateUpdated":"2026-04-22T13:25:26.449Z"},"datePublic":"2026-04-20T10:00:00.000Z","cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fullstep:fullstep:5:*:*:*:*:*:*:*"},{"vulnerable":false,"criteria":"cpe:2.3:a:fullstep:fullstep:5.30.07:*:*:*:*:*:*:*"}]}]}],"solutions":[{"lang":"en","value":"The vulnerability has been fixed by the Fullstep team in version 5.30.07, which has been available in production since January 29, 2026.","supportingMedia":[{"type":"text/html","base64":false,"value":"The vulnerability has been fixed by the Fullstep team in version 5.30.07, which has been available in production since January 29, 2026."}]}],"credits":[{"lang":"en","value":"Alejandro Rivera León","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T13:50:12.437860Z","id":"CVE-2026-5750","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-22T13:59:00.643Z"}}]}}}