CVE-2023-32706Network attack vector

Daemon crash via recursive XML entity expansion

Published Jun 1, 2023 · Updated Feb 28, 2025

XML entity expansion in Splunk Enterprise before 8.1.14, 8.2.11, or 9.0.5 allows remote attackers to crash splunkd through SAML SSO. The SAML authentication XML parser expands recursive entity references until available memory is exhausted, after which splunkd crashes or is terminated. Splunk Cloud Platform before 9.0.2303.100 is also affected; SAML SSO must be enabled, and the reported consequence is service interruption without data disclosure or modification.

CVSS severity7.7
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML entity expansion in Splunk Enterprise before 8.1.14, 8.2.11, or 9.0.5 allows remote attackers to crash splunkd through SAML SSO. The SAML authentication XML parser expands recursive entity references until available memory is exhausted, after which splunkd crashes or is terminated. Splunk Cloud Platform before 9.0.2303.100 is also affected; SAML SSO must be enabled, and the reported consequence is service interruption without data disclosure or modification.

The record

CVE
CVE-2023-32706
Published
Jun 1, 2023
Updated
Feb 28, 2025
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-611, T1499.004
Attack vector
network
Privileges
Unavailable

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 privilegesUnavailable in this record.

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 and below <9.0.2303.100

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.7SplunkCVSS:3.1/AV:N/AC:L/PR:L/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.

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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
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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