CVE-2024-38808Network attack vector

Service interruption via unchecked SpEL array allocation

Published Aug 20, 2024 · Updated Oct 30, 2024

Resource exhaustion in Spring Framework 5.3.38 and earlier allows remote attackers to interrupt service via a crafted SpEL expression. ConstructorReference allocates arrays requested by an expression even when SimpleEvaluationContext has no constructor resolver, permitting attacker-controlled array sizes to consume memory. The application must evaluate user-supplied SpEL; the reported consequence is limited to availability, without data disclosure or modification.

CVSS severity5.1
Medium
EPSS probability0.57%
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 Spring Framework 5.3.38 and earlier allows remote attackers to interrupt service via a crafted SpEL expression. ConstructorReference allocates arrays requested by an expression even when SimpleEvaluationContext has no constructor resolver, permitting attacker-controlled array sizes to consume memory. The application must evaluate user-supplied SpEL; the reported consequence is limited to availability, without data disclosure or modification.

The record

CVE
CVE-2024-38808
Published
Aug 20, 2024
Updated
Oct 30, 2024
Vendor
Spring
Product
Spring Framework
Classifications
CWE-770, CAPEC-130, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 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=5.3.0 <5.3.39, 6.0+

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Frameworkversion=5.3.0 <5.3.39, 6.0+

Published CVSS scores

5.1GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
4.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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-770Allocation of Resources Without Limits or Throttling
CAPEC-130Excessive Allocation
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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