CVE-2026-55664 (GCVE-0-2026-55664)

Vulnerability from cvelistv5 – Published: 2026-07-10 20:59 – Updated: 2026-07-13 18:55
VLAI
Title
Grist: Insufficient access control in the /forms endpoint exposes table metadata
Summary
Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, the GET /forms endpoint read table and column metadata without applying the document's access rules and did not check that the requested section was actually a form. A user with only partial read access, including public access on a publicly viewable document, could request the metadata of any widget and reveal table and column structure that access rules would otherwise hide, even in documents that contain no forms. This issue is fixed in version 1.7.15.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 18:34 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-285 - Improper Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7730 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
gristlabs grist-core Affected: < 1.7.15
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55664",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-13T18:34:28.495573Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-13T18:55:09.131Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "grist-core",
          "vendor": "gristlabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.7.15"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, the GET /forms endpoint read table and column metadata without applying the document\u0027s access rules and did not check that the requested section was actually a form. A user with only partial read access, including public access on a publicly viewable document, could request the metadata of any widget and reveal table and column structure that access rules would otherwise hide, even in documents that contain no forms. This issue is fixed in version 1.7.15."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-10T20:59:12.603Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/gristlabs/grist-core/security/advisories/GHSA-w2hc-w6cg-xvh9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/gristlabs/grist-core/security/advisories/GHSA-w2hc-w6cg-xvh9"
        },
        {
          "name": "https://github.com/gristlabs/grist-core/commit/14694156fe99c438c5f7a452ad367e933bb194db",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gristlabs/grist-core/commit/14694156fe99c438c5f7a452ad367e933bb194db"
        },
        {
          "name": "https://github.com/gristlabs/grist-core/releases/tag/v1.7.15",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gristlabs/grist-core/releases/tag/v1.7.15"
        }
      ],
      "source": {
        "advisory": "GHSA-w2hc-w6cg-xvh9",
        "discovery": "UNKNOWN"
      },
      "title": "Grist: Insufficient access control in the /forms endpoint exposes table metadata"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55664",
    "datePublished": "2026-07-10T20:59:12.603Z",
    "dateReserved": "2026-06-17T00:05:03.777Z",
    "dateUpdated": "2026-07-13T18:55:09.131Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-55664",
      "date": "2026-10-17",
      "epss": "0.00331",
      "percentile": "0.24697"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "grist-core",
                "vendor": "gristlabs",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.7.15"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, the GET /forms endpoint read table and column metadata without applying the document\u0027s access rules and did not check that the requested section was actually a form. A user with only partial read access, including public access on a publicly viewable document, could request the metadata of any widget and reveal table and column structure that access rules would otherwise hide, even in documents that contain no forms. This issue is fixed in version 1.7.15."
          }
        ],
        "id": "CVE-2026-55664",
        "lastModified": "2026-07-13T19:17:14.547",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-55664",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-13T18:34:28.495573Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-07-10T21:16:56.723",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gristlabs/grist-core/commit/14694156fe99c438c5f7a452ad367e933bb194db"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gristlabs/grist-core/releases/tag/v1.7.15"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gristlabs/grist-core/security/advisories/GHSA-w2hc-w6cg-xvh9"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-200"
              },
              {
                "lang": "en",
                "value": "CWE-285"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-55664",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-13T18:34:28.495573Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-13T18:34:31.598Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "grist-core",
              "vendor": "gristlabs",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.7.15"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, the GET /forms endpoint read table and column metadata without applying the document\u0027s access rules and did not check that the requested section was actually a form. A user with only partial read access, including public access on a publicly viewable document, could request the metadata of any widget and reveal table and column structure that access rules would otherwise hide, even in documents that contain no forms. This issue is fixed in version 1.7.15."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-200",
                  "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-285",
                  "description": "CWE-285: Improper Authorization",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-10T20:59:12.603Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/gristlabs/grist-core/security/advisories/GHSA-w2hc-w6cg-xvh9",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/gristlabs/grist-core/security/advisories/GHSA-w2hc-w6cg-xvh9"
            },
            {
              "name": "https://github.com/gristlabs/grist-core/commit/14694156fe99c438c5f7a452ad367e933bb194db",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/gristlabs/grist-core/commit/14694156fe99c438c5f7a452ad367e933bb194db"
            },
            {
              "name": "https://github.com/gristlabs/grist-core/releases/tag/v1.7.15",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/gristlabs/grist-core/releases/tag/v1.7.15"
            }
          ],
          "source": {
            "advisory": "GHSA-w2hc-w6cg-xvh9",
            "discovery": "UNKNOWN"
          },
          "title": "Grist: Insufficient access control in the /forms endpoint exposes table metadata"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-55664",
        "datePublished": "2026-07-10T20:59:12.603Z",
        "dateReserved": "2026-06-17T00:05:03.777Z",
        "dateUpdated": "2026-07-13T18:55:09.131Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.