CVE-2026-81636
- Source
- https://cve.org/CVERecord?id=CVE-2026-81636
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81636.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-81636
- Aliases
-
- EEF-CVE-2026-81636
- GHSA-mwc4-r9fc-h6mg
- Published
- 2026-08-30T18:25:29.776Z
- Modified
- 2026-08-31T03:45:42.397032101Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Query-complexity limit bypass via first/last pagination arguments in AshGraphql enables denial of service
- Details
-
Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_graphql allows an unauthenticated client to bypass the configured GraphQL query-complexity limit and force an unbounded database read.
AshGraphql.Graphql.Resolver.querycomplexity/3 multiplies child complexity by the requested page size only when the argument map contains :limit (offset pagination). Relay connections and keyset pagination use first and last, which never match that clause and fall through to the catch-all that returns childcomplexity + 1. A nested relay query such as posts(first: 500) { edges { node { comments(first: 500) { ... } } } } therefore scores as trivially cheap while materializing the full fan-out, passing an Absinthe max_complexity cap that rejects the equivalent limit-based query. The fix adds first and last clauses clamped to the action's page size.
This issue affects ash_graphql: from 0.16.23 before 1.11.0.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81636.json", "unresolved_ranges": [ { "source": "AFFECTED_FIELD", "extracted_events": [ { "introduced": "d8a3e1b15587180ad9cb3ceeb398863d086c163b" }, { "fixed": "c3229f6a65cbabb32fd7ffcac881922d1b3b30ad" } ] } ], "cwe_ids": [ "CWE-770" ], "cna_assigner": "EEF" }- References
-
- https://cna.erlef.org/cves/CVE-2026-81636.html
- https://github.com
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81636.json
- https://github.com/ash-project/ash_graphql
- https://github.com/ash-project/ash_graphql/commit/c3229f6a65cbabb32fd7ffcac881922d1b3b30ad
- https://github.com/ash-project/ash_graphql/security/advisories/GHSA-mwc4-r9fc-h6mg
- https://nvd.nist.gov/vuln/detail/CVE-2026-81636
- https://osv.dev/vulnerability/EEF-CVE-2026-81636
- https://repo.hex.pm