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

Quick assessment

Affected
apollographql router
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apollo Router Core是Apollo社区的一个路由器核心应用程序。 Apollo Router Core 1.61.2之前版本和2.1.1之前版本存在缓冲区错误漏洞，该漏洞源于操作限制计数器溢出，可能导致查询绕过阈值。

CVSS 7.5 · High EPSS 0.55% · P44
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I. Basic Information for CVE-2025-32033

Vulnerability Information
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Vulnerability Title
Apollo Router Operation Limits Vulnerable to Bypass via Integer Overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apollo Router Core 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apollo Router Core是Apollo社区的一个路由器核心应用程序。 Apollo Router Core 1.61.2之前版本和2.1.1之前版本存在缓冲区错误漏洞，该漏洞源于操作限制计数器溢出，可能导致查询绕过阈值。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
apollographql router < 1.61.2 -

II. Public POCs for CVE-2025-32033

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7661 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-32033

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Patches & Fixes for CVE-2025-32033 (2)

Vendor Advisories for CVE-2025-32033 (1)

Same Patch Batch · apollographql · 2025-04-07 · 6 CVEs total

CVE-2025-32031 7.5 HIGH Apollo Gateway Query Planner Vulnerable to Excessive Resource Consumption via Optimization
CVE-2025-32030 7.5 HIGH Apollo Gateway Query Planner Vulnerable to Excessive Resource Consumption via Named Fragme
CVE-2025-32034 7.5 HIGH Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Named Fragmen
CVE-2025-32032 7.5 HIGH Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Optimization
CVE-2025-31496 7.5 HIGH apollo-compiler Named Fragment Processing Vulnerability

IV. Related Vulnerabilities

Same product: router
Same vendor: apollographql
Same weakness: CWE-119

V. Comments for CVE-2025-32033

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