CVE-2024-35231Public exploitNetwork attack vector

Unauthenticated service interruption via unbounded profiler runs

Published May 27, 2024 · Updated Aug 2, 2024

Resource exhaustion in rack-contrib before 2.5.0 allows remote attackers to interrupt service through crafted HTTP requests. Rack::Profiler converts the profiler_runs parameter to an integer and invokes the wrapped application that many times without enforcing a maximum. Rack::Profiler must be enabled and network-reachable; no authentication or user interaction is required, and the repeated calls consume server resources until service is disrupted.

CVSS severity8.6
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in rack-contrib before 2.5.0 allows remote attackers to interrupt service through crafted HTTP requests. Rack::Profiler converts the profiler_runs parameter to an integer and invokes the wrapped application that many times without enforcing a maximum. Rack::Profiler must be enabled and network-reachable; no authentication or user interaction is required, and the repeated calls consume server resources until service is disrupted.

The record

CVE
CVE-2024-35231
Published
May 27, 2024
Updated
Aug 2, 2024
Vendor
Rack
Product
rack-contrib
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <=2.4
  2. Affected versionversion=< 2.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rack · rack-contribversion=0 <=2.4; version=< 2.5.0

Published CVSS scores

8.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

Public exploit references

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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