CVE-2025-20231Network attack vector

Sensitive-token disclosure via cleartext gateway logging

Published Mar 26, 2025 · Updated Feb 26, 2026

Sensitive-token exposure in affected Splunk Enterprise and Secure Gateway releases allows remote authenticated users to read session tokens. The app writes session and authorization tokens in clear text to splunk_secure_gateway.log when it calls the /services/ssg/secrets REST endpoint. Exploitation requires a low-privileged attacker to trick a higher-privileged victim into initiating a browser request, and exposure requires the app to be enabled with a registered device.

CVSS severity7.1
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-token exposure in affected Splunk Enterprise and Secure Gateway releases allows remote authenticated users to read session tokens. The app writes session and authorization tokens in clear text to splunk_secure_gateway.log when it calls the /services/ssg/secrets REST endpoint. Exploitation requires a low-privileged attacker to trick a higher-privileged victim into initiating a browser request, and exposure requires the app to be enabled with a registered device.

The record

CVE
CVE-2025-20231
Published
Mar 26, 2025
Updated
Feb 26, 2026
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=9.1 <9.1.8
  2. Affected versionversion=9.2 <9.2.5
  3. Affected versionversion=9.3 <9.3.3
  4. Affected versionversion=9.4 <9.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=9.1 <9.1.8; version=9.2 <9.2.5; version=9.3 <9.3.3; version=9.4 <9.4.1
Splunk, Inc. · Splunk Secure Gatewayversion=3.7 <3.7.23; version=3.8 <3.8.38

Published CVSS scores

7.1SplunkCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
5.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

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-532Insertion of Sensitive Information into Log File
T1552.001Credentials In Files

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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