{"api_version":"1","generated_at":"2026-11-02T18:53:41+00:00","cve":"CVE-2026-112256","urls":{"html":"https://cve.report/CVE-2026-112256","api":"https://cve.report/api/cve/CVE-2026-112256.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-112256","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112256"},"summary":{"title":"Logon bypass (trust of attacker-controlled completed-methods list)","description":"Acceptance of extraneous untrusted data with trusted data vulnerability in OpenText Advanced Authentication Server allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Advanced Authentication Server: from 6.4.0.0 through 6.4.3.8, from 6.5.0.0 through 6.5.0.10, and from 6.6.0.0 through 6.6.1.0.","state":"PUBLISHED","assigner":"OpenText","published_at":"2026-10-29 16:17:58","updated_at":"2026-10-29 16:29:56"},"problem_types":["CWE-349","CWE-349 CWE-349 Acceptance of extraneous untrusted data with trusted data"],"metrics":[{"version":"4.0","source":"security@opentext.com","type":"Secondary","score":"9.2","severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:C/RE:M/U:Red","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:C/RE:M/U:Red","baseScore":9.2,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"YES","Recovery":"NOT_DEFINED","valueDensity":"CONCENTRATED","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"RED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"9.2","severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/AU:Y/V:C/RE:M/U:Red","data":{"Automatable":"YES","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","providerUrgency":"RED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"CONCENTRATED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/AU:Y/V:C/RE:M/U:Red","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"MODERATE"}}],"references":[{"url":"https://docs.microfocus.com/doc/42/6.4.3.9/security-improvements-6439","name":"https://docs.microfocus.com/doc/42/6.4.3.9/security-improvements-6439","refsource":"security@opentext.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://docs.microfocus.com/doc/2582/26.3.1/security-improvements-662","name":"https://docs.microfocus.com/doc/2582/26.3.1/security-improvements-662","refsource":"security@opentext.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://docs.microfocus.com/doc/42/26.3.1/security-improvements-662","name":"https://docs.microfocus.com/doc/42/26.3.1/security-improvements-662","refsource":"security@opentext.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://docs.microfocus.com/doc/42/6.5.0.11/security-improvements-65011","name":"https://docs.microfocus.com/doc/42/6.5.0.11/security-improvements-65011","refsource":"security@opentext.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-112256","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112256","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"OpenText","product":"Advanced Authentication Server","version":"affected 6.4.0.0 6.4.3.8 semver","platforms":[]},{"source":"CNA","vendor":"OpenText","product":"Advanced Authentication Server","version":"affected 6.5.0.0 6.5.0.10 semver","platforms":[]},{"source":"CNA","vendor":"OpenText","product":"Advanced Authentication Server","version":"affected 6.6.0.0 6.6.1.0 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"JAN FISHER","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Advanced Authentication Server","vendor":"OpenText","versions":[{"changes":[{"at":"6.4.3.9","status":"unaffected"}],"lessThanOrEqual":"6.4.3.8","status":"affected","version":"6.4.0.0","versionType":"semver"},{"changes":[{"at":"6.5.0.11","status":"unaffected"}],"lessThanOrEqual":"6.5.0.10","status":"affected","version":"6.5.0.0","versionType":"semver"},{"changes":[{"at":"6.6.2.0","status":"unaffected"}],"lessThanOrEqual":"6.6.1.0","status":"affected","version":"6.6.0.0","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:opentext:advanced_authentication_server:*:*:*:*:*:*:*:*","versionEndIncluding":"6.4.3.8","versionStartIncluding":"6.4.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:opentext:advanced_authentication_server:*:*:*:*:*:*:*:*","versionEndIncluding":"6.5.0.10","versionStartIncluding":"6.5.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:opentext:advanced_authentication_server:*:*:*:*:*:*:*:*","versionEndIncluding":"6.6.1.0","versionStartIncluding":"6.6.0.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","value":"JAN FISHER"}],"datePublic":"2026-10-29T04:01:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Acceptance of extraneous untrusted data with trusted data vulnerability in OpenText Advanced Authentication Server allows Accessing Functionality Not Properly Constrained by ACLs.<p>This issue affects Advanced Authentication Server: from 6.4.0.0 through 6.4.3.8, from 6.5.0.0 through 6.5.0.10, and from 6.6.0.0 through 6.6.1.0.</p>"}],"value":"Acceptance of extraneous untrusted data with trusted data vulnerability in OpenText Advanced Authentication Server allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Advanced Authentication Server: from 6.4.0.0 through 6.4.3.8, from 6.5.0.0 through 6.5.0.10, and from 6.6.0.0 through 6.6.1.0."}],"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"metrics":[{"cvssV4_0":{"Automatable":"YES","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","providerUrgency":"RED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"CONCENTRATED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/AU:Y/V:C/RE:M/U:Red","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-349","description":"CWE-349 Acceptance of extraneous untrusted data with trusted data","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-29T15:31:18.768Z","orgId":"f81092c5-7f14-476d-80dc-24857f90be84","shortName":"OpenText"},"references":[{"tags":["release-notes"],"url":"https://docs.microfocus.com/doc/42/26.3.1/security-improvements-662"},{"tags":["release-notes"],"url":"https://docs.microfocus.com/doc/2582/26.3.1/security-improvements-662"},{"url":"https://docs.microfocus.com/doc/42/6.4.3.9/security-improvements-6439"},{"url":"https://docs.microfocus.com/doc/42/6.5.0.11/security-improvements-65011"}],"source":{"defect":["904637"],"discovery":"EXTERNAL"},"title":"Logon bypass (trust of attacker-controlled completed-methods list)","x_generator":{"engine":"Vulnogram 1.0.5"}}},"cveMetadata":{"assignerOrgId":"f81092c5-7f14-476d-80dc-24857f90be84","assignerShortName":"OpenText","cveId":"CVE-2026-112256","datePublished":"2026-10-29T15:31:18.768Z","dateReserved":"2026-10-19T12:58:32.736Z","dateUpdated":"2026-10-29T15:31:18.768Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-29 16:17:58","lastModifiedDate":"2026-10-29 16:29:56","problem_types":["CWE-349","CWE-349 CWE-349 Acceptance of extraneous untrusted data with trusted data"],"metrics":{"cvssMetricV40":[{"source":"security@opentext.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:C/RE:M/U:Red","baseScore":9.2,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"YES","Recovery":"NOT_DEFINED","valueDensity":"CONCENTRATED","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"RED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"112256","Ordinal":"1","Title":"Logon bypass (trust of attacker-controlled completed-methods lis","CVE":"CVE-2026-112256","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"112256","Ordinal":"1","NoteData":"Acceptance of extraneous untrusted data with trusted data vulnerability in OpenText Advanced Authentication Server allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Advanced Authentication Server: from 6.4.0.0 through 6.4.3.8, from 6.5.0.0 through 6.5.0.10, and from 6.6.0.0 through 6.6.1.0.","Type":"Description","Title":"Logon bypass (trust of attacker-controlled completed-methods lis"}]}}}