CVE-2024-28101Network attack vector

Memory exhaustion via pre-limit payload decompression

Published Mar 6, 2024 · Updated Aug 5, 2024

Denial of service in Apollo GraphQL Apollo Router Core 0.9.5 through 1.40.1 allows remote attackers to exhaust memory via compressed HTTP payloads. The HTTP request path fully decompresses Brotli, gzip, or deflate bodies before applying limits.http_max_request_bytes, so small encoded inputs expand unchecked in memory. No authentication or user interaction is required; a highly compressed request can consume significant memory and interrupt routing service availability.

CVSS severity7.5
High
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Apollo GraphQL Apollo Router Core 0.9.5 through 1.40.1 allows remote attackers to exhaust memory via compressed HTTP payloads. The HTTP request path fully decompresses Brotli, gzip, or deflate bodies before applying limits.http_max_request_bytes, so small encoded inputs expand unchecked in memory. No authentication or user interaction is required; a highly compressed request can consume significant memory and interrupt routing service availability.

The record

CVE
CVE-2024-28101
Published
Mar 6, 2024
Updated
Aug 5, 2024
Vendor
Apollo GraphQL
Product
Apollo Router Core
Classifications
CWE-409, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.9.5, < 1.40.2
  2. Affected versionversion=0.9.5 <1.40.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apollo GraphQL · Apollo Router Coreversion=>= 0.9.5, < 1.40.2; version=0.9.5 <1.40.2

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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