{"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":"2026-10-29T11:47:15.190Z"},"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"}},"adp":[{"references":[{"url":"https://github.com/graphql-python/graphql-core/security/advisories/GHSA-r77w-qph3-7vf8","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T11:46:36.041252Z","id":"CVE-2026-75508","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-29T11:47:15.190Z"}}]}}