CVE-2026-112256 (GCVE-0-2026-112256)

Vulnerability from cvelistv5 – Published: 2026-10-29 15:31 – Updated: 2026-10-29 15:31
VLAI
Title
Logon bypass (trust of attacker-controlled completed-methods list)
Summary
Acceptance of extraneous untrusted data with trusted data vulnerability in OpenText Advanced Authentication Server allows Accessing Functionality Not Properly Constrained by ACLs. 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.
CWE
  • CWE-349 - Acceptance of extraneous untrusted data with trusted data
Assigner
OpenText CNA under the mitre root
CNA scorecard – unranked: 9 records in the last 180 days, 10 needed details
Impacted products
Vendor Product Version CPE status
OpenText Advanced Authentication Server Affected: 6.4.0.0 , ≤ 6.4.3.8 (semver)
Affected: 6.5.0.0 , ≤ 6.5.0.10 (semver)
Affected: 6.6.0.0 , ≤ 6.6.1.0 (semver)
    cpe:2.3:a:opentext:advanced_authentication_server:*:*:*:*:*:*:*:*
    cpe:2.3:a:opentext:advanced_authentication_server:*:*:*:*:*:*:*:*
    cpe:2.3:a:opentext:advanced_authentication_server:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-29 04:01
Credits
Show details on NVD website

{
  "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.\u003cp\u003eThis 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.\u003c/p\u003e"
            }
          ],
          "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-112256",
      "date": "2026-10-30",
      "epss": "0.00245",
      "percentile": "0.15815"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "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"
                  }
                ]
              }
            ],
            "source": "security@opentext.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "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."
          }
        ],
        "id": "CVE-2026-112256",
        "lastModified": "2026-10-29T16:29:56.553",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "YES",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 9.2,
                "baseSeverity": "CRITICAL",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "PROOF_OF_CONCEPT",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "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/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",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "MODERATE"
              },
              "source": "security@opentext.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-29T16:17:58.390",
        "references": [
          {
            "source": "security@opentext.com",
            "url": "https://docs.microfocus.com/doc/2582/26.3.1/security-improvements-662"
          },
          {
            "source": "security@opentext.com",
            "url": "https://docs.microfocus.com/doc/42/26.3.1/security-improvements-662"
          },
          {
            "source": "security@opentext.com",
            "url": "https://docs.microfocus.com/doc/42/6.4.3.9/security-improvements-6439"
          },
          {
            "source": "security@opentext.com",
            "url": "https://docs.microfocus.com/doc/42/6.5.0.11/security-improvements-65011"
          }
        ],
        "sourceIdentifier": "security@opentext.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-349"
              }
            ],
            "source": "security@opentext.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
Events included in the timeline

Loading timeline…


    Loading…

    Loading…

    Loading…

    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.