Resource exhaustion in Apollographql Router
CVE-2025-32034
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Apollographql Router — versions < 1.61.2, >= 2.0.0-alpha.0, < 2.1.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-32034?
- CVE-2025-32034 is a high-severity vulnerability in Apollographql Router, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-04-07.
- How severe is CVE-2025-32034?
- High severity. CVSS v3 base score is 7.5 out of 10.