# CVE-2025-32033: Apollo Router Operation Limits Vulnerable to Bypass via Integer Overflow

> CVE-2025-32033: Apollo Router Operation Limits Vulnerable to Bypass via Integer Overflow. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-32033
Last updated: 2026-06-17T09:11:21Z

- Published: 2025-04-07 20:48 UTC · Updated: 2026-06-17 09:11 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.58%, 48th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-119

## 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, the operation limits plugin uses unsigned 32-bit integers to track limit counters (e.g. for a query's height). If a counter exceeded the maximum value for this data type (4,294,967,295), it wrapped around to 0, unintentionally allowing queries to bypass configured thresholds. This could occur for large queries if the payload limit were sufficiently increased, but could also occur for small queries with deeply nested and reused named fragments. This has been remediated in apollo-router versions 1.61.2 and 2.1.1.

## Affected vendors and products

- apollographql: router

## Tracked companies

- [Apollo GraphQL](https://rewindex.com/company/apollo-graphql.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-32033)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-32033)
- [https://github.com/apollographql/router/commit/ab6675a63174715ea6ff50881fc957831d4e9564](https://github.com/apollographql/router/commit/ab6675a63174715ea6ff50881fc957831d4e9564)
- [https://github.com/apollographql/router/commit/bba032e183b861348a466d3123c7137a1ae18952](https://github.com/apollographql/router/commit/bba032e183b861348a466d3123c7137a1ae18952)
- [https://github.com/apollographql/router/security/advisories/GHSA-84m6-5m72-45fp](https://github.com/apollographql/router/security/advisories/GHSA-84m6-5m72-45fp)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-32033 · Markdown: https://rewindex.com/cve/CVE-2025-32033.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-32033 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:17.769Z