CVE-2025-32034: Apollo router Remote Code Execution Vulnerability
HIGHCVE-2025-32034 is a HIGH (CVSS 7.5) remote code execution vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Apollo router libraries in the crates.io ecosystem. The issue involves apollo router query planner vulnerable to excessive resource consumption via named fragment expansion. Remediation is available by upgrading affected packages to version 1.61.2, 2.1.1.
CVE-2025-32034 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2025-32034
To remediate this vulnerability, upgrade all affected Apollo router dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade apollo-router to 1.61.2Upgrade apollo-router to 2.1.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for apollo-routerHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-32034, inspect your project dependencies for Apollo router:
inspect dependencies for apollo-routerAnalyze the terminal output to locate any version of Apollo router in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.61.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Apollo router, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-32034 Affected Apollo router Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
apollo-router
|
crates.io |
< 1.61.2
|
1.61.2
|
|
apollo-router
|
crates.io |
≥ 2.0.0-alpha.0
< 2.1.1
|
2.1.1
|
References
Frequently Asked Questions
What is CVE-2025-32034?
Which Apollo router versions are affected?
What version fixes CVE-2025-32034?
Is apollo-router affected?
What is the CVSS score of CVE-2025-32034?
What CWE is associated with CVE-2025-32034?
How can I check crates.io dependencies for CVE-2025-32034?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-75m2-jhh5-j5g2",
"modified" : "2025-04-08T17:50:03Z",
"published" : "2025-04-07T18:57:56Z",
"aliases" : [ "CVE-2025-32034" ],
"summary" : "Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Named Fragment Expansion",
"details" : "# Impact\n\n## Summary\n\nA vulnerability in Apollo Router allowed queries with deeply nested and reused named fragments to be prohibitively expensive to query plan, specifically during named fragment expansion. This could lead to excessive resource consumption and denial of service.\n\n## Details\n\nNamed fragments were being expanded once per fragment spread during query planning, leading to exponential resource usage when deeply nested and reused fragments were involved.\n\n## Fix/Mitigation\n\nA new **Query Fragment Expansion Limit** metric has been introduced:\n - This metric computes the number of selections a query would have if its fragment spreads were fully expanded.\n - The metric is checked against a limit to prevent excessive computation.\n\n# Patches\n\nThis has been remediated in `apollo-router` versions 1.61.2 and 2.1.1.\n\n# Workarounds\n\nThe only known workaround is \"Safelisting\" or \"Safelisting with IDs only\" per [Safelisting with Persisted Queries - Apollo GraphQL Docs](https://www.apollographql.com/docs/graphos/routing/security/persisted-queries#router-security-levels).\n\n# References\n\n[Query Planning Documentation](https://www.apollographql.com/docs/graphos/reference/federation/query-plans)\n\n## Acknowledgements\n\nWe appreciate the efforts of the security community in identifying and improving the performance and security of query planning mechanisms.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "crates.io",
"name" : "apollo-router"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.61.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "crates.io",
"name" : "apollo-router"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0-alpha.0"
}, {
"fixed" : "2.1.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/apollographql/router/security/advisories/GHSA-75m2-jhh5-j5g2"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-32034"
}, {
"type" : "WEB",
"url" : "https://github.com/apollographql/router/commit/ab6675a63174715ea6ff50881fc957831d4e9564"
}, {
"type" : "WEB",
"url" : "https://github.com/apollographql/router/commit/bba032e183b861348a466d3123c7137a1ae18952"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/apollographql/router"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-770" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2025-04-07T18:57:56Z",
"nvd_published_at" : "2025-04-07T21:15:43Z"
}
}