CVE-2026-112043 (GCVE-0-2026-112043)

Vulnerability from cvelistv5 – Published: 2026-10-19 02:30 – Updated: 2026-10-19 02:30
VLAI
Title
calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization
Summary
A weakness has been identified in calcom cal.com and cal.diy up to 6.2.0. Impacted is the function createWebhookProcedure of the file packages/trpc/server/routers/viewer/webhook/util.ts of the component Webhook Handler. Executing a manipulation of the argument ID can lead to authorization bypass. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3892 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/421691 vdb-entrytechnical-description
https://vuldb.com/vuln/421691/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-112043 third-party-advisory
https://vuldb.com/submit/1009017 third-party-advisory
https://github.com/calcom/cal.diy/issues/29982 issue-tracking
https://github.com/calcom/cal.diy/pull/30223 issue-trackingpatch
Impacted products
Vendor Product Version CPE status
calcom cal.com Affected: 6.0
Affected: 6.1
Affected: 6.2.0
    cpe:2.3:a:calcom:cal.com:*:*:*:*:*:*:*:*
Create a notification for this product.
calcom cal.diy Affected: 6.0
Affected: 6.1
Affected: 6.2.0
    cpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
geochen (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:calcom:cal.com:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Webhook Handler"
          ],
          "product": "cal.com",
          "vendor": "calcom",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "status": "affected",
              "version": "6.2.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Webhook Handler"
          ],
          "product": "cal.diy",
          "vendor": "calcom",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "status": "affected",
              "version": "6.2.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "geochen (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A weakness has been identified in calcom cal.com and cal.diy up to 6.2.0. Impacted is the function createWebhookProcedure of the file packages/trpc/server/routers/viewer/webhook/util.ts of the component Webhook Handler. Executing a manipulation of the argument ID can lead to authorization bypass. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 6.5,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "Authorization Bypass",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T02:30:14.914Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-421691 | calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/421691"
        },
        {
          "name": "VDB-421691 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/421691/cti"
        },
        {
          "name": "CVE-2026-112043 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-112043"
        },
        {
          "name": "Submit #1009017 | https://github.com/calcom/ cal.diy a46d5f8dd4a9e5a821c7c7f54ef5d2e5999e445d Authorization Bypass",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/1009017"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/calcom/cal.diy/issues/29982"
        },
        {
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/calcom/cal.diy/pull/30223"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-18T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-10-18T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-10-18T12:48:06.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization",
      "x_generator": [
        "VulDB PVTS v202610"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-112043",
    "datePublished": "2026-10-19T02:30:14.914Z",
    "dateReserved": "2026-10-18T10:43:00.972Z",
    "dateUpdated": "2026-10-19T02:30:14.914Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-112043",
      "date": "2026-10-19",
      "epss": "0.00296",
      "percentile": "0.20953"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "cpes": [
                  "cpe:2.3:a:calcom:cal.com:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Webhook Handler"
                ],
                "product": "cal.com",
                "vendor": "calcom",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.0"
                  },
                  {
                    "status": "affected",
                    "version": "6.1"
                  },
                  {
                    "status": "affected",
                    "version": "6.2.0"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Webhook Handler"
                ],
                "product": "cal.diy",
                "vendor": "calcom",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.0"
                  },
                  {
                    "status": "affected",
                    "version": "6.1"
                  },
                  {
                    "status": "affected",
                    "version": "6.2.0"
                  }
                ]
              }
            ],
            "source": "cna@vuldb.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A weakness has been identified in calcom cal.com and cal.diy up to 6.2.0. Impacted is the function createWebhookProcedure of the file packages/trpc/server/routers/viewer/webhook/util.ts of the component Webhook Handler. Executing a manipulation of the argument ID can lead to authorization bypass. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance."
          }
        ],
        "id": "CVE-2026-112043",
        "lastModified": "2026-10-19T03:16:59.107",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "cna@vuldb.com",
              "type": "Secondary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.4,
              "source": "cna@vuldb.com",
              "type": "Primary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "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": "LOW",
                "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:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "LOW",
                "vulnIntegrityImpact": "LOW",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "cna@vuldb.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-19T03:16:58.920",
        "references": [
          {
            "source": "cna@vuldb.com",
            "url": "https://github.com/calcom/cal.diy/issues/29982"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://github.com/calcom/cal.diy/pull/30223"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/cve/CVE-2026-112043"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/submit/1009017"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/421691"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/421691/cti"
          }
        ],
        "sourceIdentifier": "cna@vuldb.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-285"
              },
              {
                "lang": "en",
                "value": "CWE-639"
              }
            ],
            "source": "cna@vuldb.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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

Loading timeline…




    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.