CVE-2026-110802

{
  "id": "CVE-2026-110802",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T21:18:35.267",
  "lastModified": "2026-11-05T21:18:35.267",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Altair is a GraphQL client for all platforms. From 7.2.4 until 8.5.8, packages/altair-iframe-sandbox/src/main.ts reads plugin_sandbox_opts from the iframe-sandbox query string and passes attacker-controlled scriptUrls to injectScript() in packages/altair-core/src/utils/inject.ts, which creates script elements in the page. The intended parent iframe flow places the page in an iframe with sandbox allow-scripts and without allow-same-origin, but direct navigation to a crafted iframe-sandbox URL omits that isolation and executes the supplied script in the origin serving Altair. Exploitation requires a victim to open the crafted URL, and the resulting script can access script-readable storage and make same-origin requests according to the deployment's authentication and cookie controls. This issue is fixed in version 8.5.8."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "altair-graphql",
          "product": "altair",
          "versions": [
            {
              "version": ">= 7.2.4, < 8.5.8",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "altair-graphql",
          "product": "altair-express-middleware",
          "versions": [
            {
              "version": ">= 7.2.4, < 8.5.8",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "altair-graphql",
          "product": "altair-fastify-plugin",
          "versions": [
            {
              "version": ">= 7.2.4, < 8.5.8",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "altair-graphql",
          "product": "altair-koa-middleware",
          "versions": [
            {
              "version": ">= 7.2.4, < 8.5.8",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "altair-graphql",
          "product": "altair-static",
          "versions": [
            {
              "version": ">= 7.2.4, < 8.5.8",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-829"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/altair-graphql/altair/releases/tag/v8.5.8",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf",
      "source": "[email protected]"
    }
  ]
}