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CVE-2023-50730— Grackle has StackOverflowError in GraphQL query processing

Quick assessment

Affected
typelevel grackle
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grackle是Typelevel项目的一个用函数式Scala编写的GraphQL服务器。 Grackle 0.18.0之前版本存在安全漏洞，该漏洞源于存在堆栈溢出，可能导致潜在的拒绝服务。

CVSS 7.5 · High EPSS 0.83% · P57

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2023-50730

Vulnerability Information
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Vulnerability Title
Grackle has StackOverflowError in GraphQL query processing
Source: CVE Program / CVE List V5
Vulnerability Description
Grackle is a GraphQL server written in functional Scala, built on the Typelevel stack. The GraphQL specification requires that GraphQL fragments must not form cycles, either directly or indirectly. Prior to Grackle version 0.18.0, that requirement wasn't checked, and queries with cyclic fragments would have been accepted for type checking and compilation. The attempted compilation of such fragments would result in a JVM `StackOverflowError` being thrown. Some knowledge of an applications GraphQL schema would be required to construct such a query, however no knowledge of any application-specific performance or other behavioural characteristics would be needed. Grackle uses the cats-parse library for parsing GraphQL queries. Prior to version 0.18.0, Grackle made use of the cats-parse `recursive` operator. However, `recursive` is not currently stack safe. `recursive` was used in three places in the parser: nested selection sets, nested input values (lists and objects), and nested list type declarations. Consequently, queries with deeply nested selection sets, input values or list types could be constructed which exploited this, causing a JVM `StackOverflowException` to be thrown during parsing. Because this happens very early in query processing, no specific knowledge of an applications GraphQL schema would be required to construct such a query. The possibility of small queries resulting in stack overflow is a potential denial of service vulnerability. This potentially affects all applications using Grackle which have untrusted users. Both stack overflow issues have been resolved in the v0.18.0 release of Grackle. As a workaround, users could interpose a sanitizing layer in between untrusted input and Grackle query processing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Grackle 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grackle是Typelevel项目的一个用函数式Scala编写的GraphQL服务器。 Grackle 0.18.0之前版本存在安全漏洞，该漏洞源于存在堆栈溢出，可能导致潜在的拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
typelevel grackle < 0.18.0 -

II. Public POCs for CVE-2023-50730

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Qwen3.6-35B-A3B · 8676 chars
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III. Intelligence Information for CVE-2023-50730

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Patches & Fixes for CVE-2023-50730 (1)

Vendor Advisories for CVE-2023-50730 (1)

Other References for CVE-2023-50730 (1)

IV. Related Vulnerabilities

Same vendor: typelevel
Same weakness: CWE-400

V. Comments for CVE-2023-50730

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