CVE-2026-107728 (GCVE-0-2026-107728)

Vulnerability from cvelistv5 – Published: 2026-10-08 22:13 – Updated: 2026-10-08 22:13
VLAI
Title
Strawberry GraphQL: Synchronous permission checks can treat an awaitable authorization result as truthy
Summary
Strawberry GraphQL is a library for creating GraphQL APIs. From 0.217.0 until 0.326.1, PermissionExtension.resolve() on a synchronous field resolver evaluates the result of has_permission() for truthiness. When a custom permission declares has_permission() as a normal function but returns an awaitable, supports_sync does not classify it as asynchronous, the awaitable is not awaited, and its inherently truthy object value permits the protected resolver to run even when the result would resolve to false. This affects synchronous field resolvers under both execute_sync() and execute(); permissions declared with async def has_permission() and synchronous permissions returning a boolean are not affected. This issue is fixed in version 0.326.1.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7580 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
strawberry-graphql strawberry Affected: >= 0.217.0, < 0.326.1
guessed Create a notification for this product.
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{
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      "affected": [
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          "vendor": "strawberry-graphql",
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            }
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        {
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          "value": "Strawberry GraphQL is a library for creating GraphQL APIs. From 0.217.0 until 0.326.1, PermissionExtension.resolve() on a synchronous field resolver evaluates the result of has_permission() for truthiness. When a custom permission declares has_permission() as a normal function but returns an awaitable, supports_sync does not classify it as asynchronous, the awaitable is not awaited, and its inherently truthy object value permits the protected resolver to run even when the result would resolve to false. This affects synchronous field resolvers under both execute_sync() and execute(); permissions declared with async def has_permission() and synchronous permissions returning a boolean are not affected. This issue is fixed in version 0.326.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-08T22:13:00.911Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-pfvf-fwfp-25mp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-pfvf-fwfp-25mp"
        },
        {
          "name": "https://github.com/strawberry-graphql/strawberry/pull/4605",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/strawberry-graphql/strawberry/pull/4605"
        },
        {
          "name": "https://github.com/strawberry-graphql/strawberry/commit/2ebb79796c0e5ebb43cae1abd2b5a21363b1c00e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strawberry-graphql/strawberry/commit/2ebb79796c0e5ebb43cae1abd2b5a21363b1c00e"
        },
        {
          "name": "https://github.com/strawberry-graphql/strawberry/releases/tag/0.326.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strawberry-graphql/strawberry/releases/tag/0.326.1"
        }
      ],
      "source": {
        "advisory": "GHSA-pfvf-fwfp-25mp",
        "discovery": "UNKNOWN"
      },
      "title": "Strawberry GraphQL: Synchronous permission checks can treat an awaitable authorization result as truthy"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-107728",
    "datePublished": "2026-10-08T22:13:00.911Z",
    "dateReserved": "2026-10-08T17:21:52.976Z",
    "dateUpdated": "2026-10-08T22:13:00.911Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "strawberry",
                "vendor": "strawberry-graphql",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 0.217.0, \u003c 0.326.1"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Strawberry GraphQL is a library for creating GraphQL APIs. From 0.217.0 until 0.326.1, PermissionExtension.resolve() on a synchronous field resolver evaluates the result of has_permission() for truthiness. When a custom permission declares has_permission() as a normal function but returns an awaitable, supports_sync does not classify it as asynchronous, the awaitable is not awaited, and its inherently truthy object value permits the protected resolver to run even when the result would resolve to false. This affects synchronous field resolvers under both execute_sync() and execute(); permissions declared with async def has_permission() and synchronous permissions returning a boolean are not affected. This issue is fixed in version 0.326.1."
          }
        ],
        "id": "CVE-2026-107728",
        "lastModified": "2026-10-08T23:16:58.180",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-08T23:16:58.180",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/strawberry-graphql/strawberry/commit/2ebb79796c0e5ebb43cae1abd2b5a21363b1c00e"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/strawberry-graphql/strawberry/pull/4605"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/strawberry-graphql/strawberry/releases/tag/0.326.1"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-pfvf-fwfp-25mp"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-10-08T23:05:12+00:00",
      "cve": "CVE-2026-107728",
      "id": "CVE-2026-107728",
      "initial_release_date": "2026-10-08T22:13:00.911000+00:00",
      "product_status:known_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "strawberry-graphql: strawberry-graphql: Authorization bypass via improper permission evaluation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107728.json",
      "version": "3"
    }
  }
}



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