CVE-2025-32032 Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Optimization Bypass

What is CVE-2025-32032?

CVE-2025-32032 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. A vulnerability in Apollo Router allowed queries with deeply nested and reused named fragments to be prohibitively expensive to query plan, specifically due to internal optimizations being frequently bypassed. The query planner includes an optimization that significantly speeds up planning for applicable GraphQL selections. However, queries with deeply nested and reused named fragments can generate many selections where this optimization does not apply, leading to significantly longer planning times. Because the query planner does not enforce a timeout, a small number of such queries can exhaust router's thread pool, rendering it inoperable. 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-2025-32032?

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

How do I fix CVE-2025-32032?

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-2025-32032 being exploited?

There is no known exploitation of CVE-2025-32032 in the wild and no public exploit code.

Sources

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

Also known as GHSA-94hh-jmq8-2fgp.