CVE-2024-31617Network attack vector

Service interruption via mishandled chunked encoding

Published May 22, 2024 · Updated Feb 13, 2025

Resource exhaustion in OpenLiteSpeed before 1.8.1 allows remote attackers to interrupt service via chunked HTTP requests. LiteSpeed has not published which chunk-decoding locus mishandles input or whether memory, CPU, or connection state is consumed without a limit. The HTTP listener is reachable without authentication, and the reported consequence is limited to degraded availability rather than data access or modification.

CVSS severity5.3
Medium
EPSS probability0.44%
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 OpenLiteSpeed before 1.8.1 allows remote attackers to interrupt service via chunked HTTP requests. LiteSpeed has not published which chunk-decoding locus mishandles input or whether memory, CPU, or connection state is consumed without a limit. The HTTP listener is reachable without authentication, and the reported consequence is limited to degraded availability rather than data access or modification.

The record

CVE
CVE-2024-31617
Published
May 22, 2024
Updated
Feb 13, 2025
Vendor
LiteSpeed Technologies
Product
OpenLiteSpeed
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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 <1.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LiteSpeed Technologies · OpenLiteSpeedversion=0 <1.8.1

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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
T1499Endpoint Denial of Service

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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