{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-75508", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-17T20:49:21.598Z", "datePublished": "2026-10-22T16:10:17.124Z", "dateUpdated": "2026-10-22T16:10:17.124Z"}, "containers": {"cna": {"title": "GraphQL-core: Denial of service via comment tokens bypassing the parser's max_tokens limit", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/graphql-python/graphql-core/security/advisories/GHSA-r77w-qph3-7vf8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/graphql-python/graphql-core/security/advisories/GHSA-r77w-qph3-7vf8"}, {"name": "https://github.com/graphql-python/graphql-core/commit/437dea102e92fdf05a2971ca76787c5a5bad875a", "tags": ["x_refsource_MISC"], "url": "https://github.com/graphql-python/graphql-core/commit/437dea102e92fdf05a2971ca76787c5a5bad875a"}, {"name": "https://github.com/graphql-python/graphql-core/commit/80ef435a1808fbbcc4aaac63ae76771a1c91002d", "tags": ["x_refsource_MISC"], "url": "https://github.com/graphql-python/graphql-core/commit/80ef435a1808fbbcc4aaac63ae76771a1c91002d"}, {"name": "https://github.com/graphql-python/graphql-core/releases/tag/v3.2.12", "tags": ["x_refsource_MISC"], "url": "https://github.com/graphql-python/graphql-core/releases/tag/v3.2.12"}, {"name": "https://github.com/graphql-python/graphql-core/releases/tag/v3.3.0rc1", "tags": ["x_refsource_MISC"], "url": "https://github.com/graphql-python/graphql-core/releases/tag/v3.3.0rc1"}], "affected": [{"vendor": "graphql-python", "product": "graphql-core", "versions": [{"version": ">= 3.2.3, < 3.2.12", "status": "affected"}, {"version": ">= 3.3.0a3, < 3.3.0rc1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-22T16:10:17.124Z"}, "descriptions": [{"lang": "en", "value": "GraphQL-core is a Python port of the GraphQL.js reference implementation. From 3.2.3 until 3.2.12 and 3.3.0rc1, the parser's max_tokens limit in Parser.advance_lexer counts only non-comment tokens returned after Lexer.lookahead skips comments. Each skipped comment is still allocated as a Token and retained through token.next and token.prev, allowing a highly compressible comment-padded GraphQL document to pass a low token limit while consuming memory. An unauthenticated remote attacker can exhaust worker memory before AST-based depth or complexity controls run. This issue is fixed in versions 3.2.12 and 3.3.0rc1."}], "source": {"advisory": "GHSA-r77w-qph3-7vf8", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "graphql-core", "vendor": "graphql-python", "versions": [{"status": "affected", "version": ">= 3.2.3, < 3.2.12"}, {"status": "affected", "version": ">= 3.3.0a3, < 3.3.0rc1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GraphQL-core is a Python port of the GraphQL.js reference implementation. From 3.2.3 until 3.2.12 and 3.3.0rc1, the parser's max_tokens limit in Parser.advance_lexer counts only non-comment tokens returned after Lexer.lookahead skips comments. Each skipped comment is still allocated as a Token and retained through token.next and token.prev, allowing a highly compressible comment-padded GraphQL document to pass a low token limit while consuming memory. An unauthenticated remote attacker can exhaust worker memory before AST-based depth or complexity controls run. This issue is fixed in versions 3.2.12 and 3.3.0rc1."}], "id": "CVE-2026-75508", "lastModified": "2026-10-22T17:40:46.877", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-22T17:16:59.933", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/graphql-python/graphql-core/commit/437dea102e92fdf05a2971ca76787c5a5bad875a"}, {"source": "security-advisories@github.com", "url": "https://github.com/graphql-python/graphql-core/commit/80ef435a1808fbbcc4aaac63ae76771a1c91002d"}, {"source": "security-advisories@github.com", "url": "https://github.com/graphql-python/graphql-core/releases/tag/v3.2.12"}, {"source": "security-advisories@github.com", "url": "https://github.com/graphql-python/graphql-core/releases/tag/v3.3.0rc1"}, {"source": "security-advisories@github.com", "url": "https://github.com/graphql-python/graphql-core/security/advisories/GHSA-r77w-qph3-7vf8"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}