{"id":"DEBIAN-CVE-2026-75508","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.","modified":"2026-10-23T18:05:44.587015940Z","published":"2026-10-22T17:16:59.933Z","upstream":["CVE-2026-75508"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-75508"}],"affected":[{"package":{"name":"graphql-core","ecosystem":"Debian:12","purl":"pkg:deb/debian/graphql-core?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-1","3.1.7-1","3.2.0-1","3.2.1-1","3.2.11-1","3.2.12-1","3.2.3-1","3.2.3-2","3.2.4-1","3.2.5-1","3.2.6-1","3.2.6-2","3.2.7-1","3.2.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75508.json"}},{"package":{"name":"graphql-core","ecosystem":"Debian:13","purl":"pkg:deb/debian/graphql-core?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.11-1","3.2.12-1","3.2.6-1","3.2.6-2","3.2.7-1","3.2.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75508.json"}},{"package":{"name":"graphql-core","ecosystem":"Debian:14","purl":"pkg:deb/debian/graphql-core?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.12-1"}]}],"versions":["3.2.11-1","3.2.6-1","3.2.6-2","3.2.7-1","3.2.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75508.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}