CVE-2025-32034 Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Named Fragment Expansion

What is CVE-2025-32034?

CVE-2025-32034 is a high-severity denial of service vulnerability in apollographql router, published on 7 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Apollo Router Core is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Prior to 1.61.2 and 2.1.1, a 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. Named fragments were being expanded once per fragment spread during query planning, leading to exponential resource usage when deeply nested and reused fragments were involved. This could lead to excessive resource consumption and denial of service. This has been remediated in apollo-router versions 1.61.2 and 2.1.1.

Weakness: CWE-770

Which versions are affected by CVE-2025-32034?

4 open source packages ship an affected version, including apollo-router.

How do I fix CVE-2025-32034?

Upgrade apollo-router to a fixed version for your release line: 1.61.2 or 2.1.1.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-32034 being exploited?

There is no known exploitation of CVE-2025-32034 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-75m2-jhh5-j5g2.