Unauthorized payload signing via unchecked REST authorization
Published Oct 7, 2026 · Updated Oct 7, 2026
Improper access control in affected Splunk Enterprise and Splunk Secure Gateway releases allows remote authenticated users to obtain signed payloads. Multiple Secure Gateway REST endpoints process attacker-controlled signing requests without enforcing the authorization required for privileged functionality. A Splunk account without the admin or power role is sufficient; the published record does not establish what further use the signed payloads permit.
Summary
What happened
Improper access control in affected Splunk Enterprise and Splunk Secure Gateway releases allows remote authenticated users to obtain signed payloads. Multiple Secure Gateway REST endpoints process attacker-controlled signing requests without enforcing the authorization required for privileged functionality. A Splunk account without the admin or power role is sufficient; the published record does not establish what further use the signed payloads permit.
The record
- CVE
- CVE-2026-76265
- Published
- Oct 7, 2026
- Updated
- Oct 7, 2026
- Vendor
- Splunk, Inc.
- Product
- Splunk Enterprise
- Classifications
- CWE-284
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 7, 2026CVE publishedPublication date reported by the CVE source.
- Oct 7, 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.
- Affected versionversion=10.0 <10.0.10
- Affected versionversion=10.2 <10.2.7
- Affected versionversion=10.4 <10.4.3
- Affected versionversion=9.4 <9.4.15
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
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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