CVE-2026-75508
- Source
- https://cve.org/CVERecord?id=CVE-2026-75508
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75508.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-75508
- Aliases
- Downstream
- Published
- 2026-10-22T16:10:17Z
- Modified
- 2026-10-23T02:45:55Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- GraphQL-core: Denial of service via comment tokens bypassing the parser's max_tokens limit
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-400", "CWE-770" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75508.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75508.json
- https://github.com/graphql-python/graphql-core/commit/437dea102e92fdf05a2971ca76787c5a5bad875a
- https://github.com/graphql-python/graphql-core/commit/80ef435a1808fbbcc4aaac63ae76771a1c91002d
- https://github.com/graphql-python/graphql-core/releases/tag/v3.2.12
- https://github.com/graphql-python/graphql-core/releases/tag/v3.3.0rc1
- https://github.com/graphql-python/graphql-core/security/advisories/GHSA-r77w-qph3-7vf8
- https://nvd.nist.gov/vuln/detail/CVE-2026-75508
Affected packages
Git / github.com/graphql-python/graphql-core
Affected ranges
- Type
- GIT
- Repo
- https://github.com/graphql-python/graphql-core
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "3.2.3" }, { "fixed": "3.2.12" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "3.3.0a3" }, { "fixed": "3.3.0rc1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "437dea102e92fdf05a2971ca76787c5a5bad875a" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "80ef435a1808fbbcc4aaac63ae76771a1c91002d" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v3.2.12", "range": [ { "fixed": "af6addb1bf39e3b111ae7b805d774326a02f1079" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v3.3.0rc1", "range": [ { "fixed": "2d72d39ce7107226b9bcd5cc47835a19da0c2c87" } ], "source": "REFERENCES_TAG" } ] }