CVE-2023-32708Network attack vector

Restricted-content access via REST response splitting

Published Jun 1, 2023 · Updated Feb 28, 2025

HTTP response splitting in Splunk Web allows remote authenticated users to access restricted REST content through the rest SPL command. The published CWE mapping establishes that Splunk Web fails to neutralize CR and LF characters before including data in outgoing HTTP headers. A low-privileged account is required in Splunk Enterprise 8.1.0 through 8.1.13, 8.2.0 through 8.2.10, and 9.0.0 through 9.0.4, or Splunk Cloud Platform before 9.0.2303.100; successful exploitation reaches arbitrary REST endpoints.

CVSS severity7.2
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP response splitting in Splunk Web allows remote authenticated users to access restricted REST content through the rest SPL command. The published CWE mapping establishes that Splunk Web fails to neutralize CR and LF characters before including data in outgoing HTTP headers. A low-privileged account is required in Splunk Enterprise 8.1.0 through 8.1.13, 8.2.0 through 8.2.10, and 9.0.0 through 9.0.4, or Splunk Cloud Platform before 9.0.2303.100; successful exploitation reaches arbitrary REST endpoints.

The record

CVE
CVE-2023-32708
Published
Jun 1, 2023
Updated
Feb 28, 2025
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-436, CWE-113
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 28, 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=8.1 <8.1.14
  2. Affected versionversion=8.2 <8.2.11
  3. Affected versionversion=9.0 <9.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=8.1 <8.1.14; version=8.2 <8.2.11; version=9.0 <9.0.5
Splunk, Inc. · Splunk Cloud Platformversion=- <9.0.2303.100

Published CVSS scores

7.2SplunkCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-436Interpretation Conflict
CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

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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