FKIE_CVE-2026-55659

Vulnerability from fkie_nvd - Published: 2026-07-10 21:16 - Updated: 2026-07-10 21:16
Severity
7.7 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Summary
Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, several server-rendered Grist pages embedded user-controlled values into the page and into inline scripts without fully escaping them, allowing cross-site scripting. On the main application page, a document's name or description, set by a document editor, is rendered into the page that other users load when opening the document. On the OAuth2 end-of-flow page, the openerOrigin request parameter was reflected back into the served page. Injected script runs in the victim's Grist origin and can act through the authenticated session, reading or modifying data and changing sharing settings and access rules. A document editor could therefore escalate to owner-level access. This issue is fixed in version 1.7.15.
References
security-advisories@github.comhttps://github.com/gristlabs/grist-core/commit/4ced8064b7ea0e1763d5a6a2588b22774ce7efbc
security-advisories@github.comhttps://github.com/gristlabs/grist-core/releases/tag/v1.7.15
security-advisories@github.comhttps://github.com/gristlabs/grist-core/security/advisories/GHSA-6qrq-h2h6-cw54
Impacted products
Vendor Product Version
To clipboard 

{
  "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, several server-rendered Grist pages embedded user-controlled values into the page and into inline scripts without fully escaping them, allowing cross-site scripting. On the main application page, a document\u0027s name or description, set by a document editor, is rendered into the page that other users load when opening the document. On the OAuth2 end-of-flow page, the openerOrigin request parameter was reflected back into the served page. Injected script runs in the victim\u0027s Grist origin and can act through the authenticated session, reading or modifying data and changing sharing settings and access rules. A document editor could therefore escalate to owner-level access. This issue is fixed in version 1.7.15."
    }
  ],
  "id": "CVE-2026-55659",
  "lastModified": "2026-07-10T21:16:56.577",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-10T21:16:56.577",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/gristlabs/grist-core/commit/4ced8064b7ea0e1763d5a6a2588b22774ce7efbc"
    },
    {
      "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-6qrq-h2h6-cw54"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-116"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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