CVE-2025-27097: graphql mesh DoS — Fix

Description

GraphQL Mesh is a GraphQL Federation framework and gateway for both GraphQL Federation and non-GraphQL Federation subgraphs, non-GraphQL services, such as REST and gRPC, and also databases such as MongoDB, MySQL, and PostgreSQL. When a user transforms on the root level or single source with transforms, and the client sends the same query with different variables, the initial variables are used in all following requests until the cache evicts DocumentNode. If a token is sent via variables, the following requests will act like the same token is sent even if the following requests have different tokens. This can cause a short memory leak but it won't grow per each request but per different operation until the cache evicts DocumentNode by LRU mechanism.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
the-guild	graphql_mesh	All
the-guild	graphql_mesh	All
the-guild	graphql_mesh	All
the-guild	graphql_mesh	All

References

Advisories & Patches

https://github.com/ardatan/graphql-mesh/security/advisories/GHSA-rr4x-crhf-8886

Frequently Asked Questions

What is CVE-2025-27097? +

GraphQL Mesh is a GraphQL Federation framework and gateway for both GraphQL Federation and non-GraphQL Federation subgraphs, non-GraphQL services, such as REST and gRPC, and also databases such as MongoDB, MySQL, and PostgreSQL. When a user transforms on the root level or single source with transforms, and the client sends the same query with different variables, the initial variables are used in all following requests until the cache evicts DocumentNode. If a token is sent via variables, the following requests will act like the same token is sent even if the following requests have different tokens. This can cause a short memory leak but it won't grow per each request but per different operation until the cache evicts DocumentNode by LRU mechanism. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-27097? +

CVE-2025-27097 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-27097? +

CVE-2025-27097 affects products from the-guild, specifically: graphql_mesh. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-27097? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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