CVE-2026-107856 (GCVE-0-2026-107856)

Vulnerability from cvelistv5 – Published: 2026-10-09 20:32 – Updated: 2026-10-09 20:32
VLAI
Title
CiviForm: Trusted-Intermediary IDOR discloses any citizen's name and email
Summary
CiviForm simplifies applications for government benefits programs by reusing applicant data across multiple benefit applications. Prior to 3.33.0, GET /admin/tiDash/editClientForm/:accountId verifies that the requester is a Trusted Intermediary but showEditClientForm performs a raw lookupAccount(accountId) without confirming that the citizen account belongs to the requester's trustedIntermediaryGroup. An authenticated Trusted Intermediary can enumerate accountId values and read the applicant display name, including the citizen's name and email address, for accounts outside the intermediary's group. This issue is fixed in version 3.33.0.
Severity
4.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7595 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
civiform civiform Affected: < 3.33.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "civiform",
          "vendor": "civiform",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.33.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "CiviForm simplifies applications for government benefits programs by reusing applicant data across multiple benefit applications. Prior to 3.33.0, GET /admin/tiDash/editClientForm/:accountId verifies that the requester is a Trusted Intermediary but showEditClientForm performs a raw lookupAccount(accountId) without confirming that the citizen account belongs to the requester\u0027s trustedIntermediaryGroup. An authenticated Trusted Intermediary can enumerate accountId values and read the applicant display name, including the citizen\u0027s name and email address, for accounts outside the intermediary\u0027s group. This issue is fixed in version 3.33.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T20:32:10.885Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/civiform/civiform/security/advisories/GHSA-qv7c-9hjr-9rv7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/civiform/civiform/security/advisories/GHSA-qv7c-9hjr-9rv7"
        },
        {
          "name": "https://github.com/civiform/civiform/pull/13635",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/civiform/civiform/pull/13635"
        },
        {
          "name": "https://github.com/civiform/civiform/commit/ccfd84ff2d9ee6570a1b1524c7ae3a3732e1839e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/civiform/civiform/commit/ccfd84ff2d9ee6570a1b1524c7ae3a3732e1839e"
        },
        {
          "name": "https://github.com/civiform/civiform/releases/tag/v3.33.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/civiform/civiform/releases/tag/v3.33.0"
        }
      ],
      "source": {
        "advisory": "GHSA-qv7c-9hjr-9rv7",
        "discovery": "UNKNOWN"
      },
      "title": "CiviForm: Trusted-Intermediary IDOR discloses any citizen\u0027s name and email"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-107856",
    "datePublished": "2026-10-09T20:32:10.885Z",
    "dateReserved": "2026-10-08T22:34:49.292Z",
    "dateUpdated": "2026-10-09T20:32:10.885Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-107856",
      "date": "2026-10-11",
      "epss": "0.00233",
      "percentile": "0.13109"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "civiform",
                "vendor": "civiform",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 3.33.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "CiviForm simplifies applications for government benefits programs by reusing applicant data across multiple benefit applications. Prior to 3.33.0, GET /admin/tiDash/editClientForm/:accountId verifies that the requester is a Trusted Intermediary but showEditClientForm performs a raw lookupAccount(accountId) without confirming that the citizen account belongs to the requester\u0027s trustedIntermediaryGroup. An authenticated Trusted Intermediary can enumerate accountId values and read the applicant display name, including the citizen\u0027s name and email address, for accounts outside the intermediary\u0027s group. This issue is fixed in version 3.33.0."
          }
        ],
        "id": "CVE-2026-107856",
        "lastModified": "2026-10-09T21:17:03.387",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 0.9,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-09T21:17:03.387",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/civiform/civiform/commit/ccfd84ff2d9ee6570a1b1524c7ae3a3732e1839e"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/civiform/civiform/pull/13635"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/civiform/civiform/releases/tag/v3.33.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/civiform/civiform/security/advisories/GHSA-qv7c-9hjr-9rv7"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-639"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



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.