Low-privileged code execution via jsonpickle deserialization
Published Jun 10, 2026 · Updated Jun 10, 2026
Unsafe deserialization in Splunk Secure Gateway allows remote authenticated users to execute code on affected Splunk deployments. The app passes crafted App KV Store JSON to jsonpickle, which reconstructs attacker-controlled Python objects without adequate validation. A low-privileged account lacking the admin and power roles is sufficient, and successful exploitation grants code execution in the Splunk service context.
Summary
What happened
Unsafe deserialization in Splunk Secure Gateway allows remote authenticated users to execute code on affected Splunk deployments. The app passes crafted App KV Store JSON to jsonpickle, which reconstructs attacker-controlled Python objects without adequate validation. A low-privileged account lacking the admin and power roles is sufficient, and successful exploitation grants code execution in the Splunk service context.
The record
- CVE
- CVE-2026-20251
- Published
- Jun 10, 2026
- Updated
- Jun 10, 2026
- Vendor
- Zoom Video Communications, Inc.
- Product
- Splunk Enterprise
- Classifications
- CWE-502, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 10, 2026CVE publishedPublication date reported by the CVE source.
- Jun 10, 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 <10.0.7
- Affected versionversion=10.2 <10.2.4
- Affected versionversion=9.3 <9.3.13
- Affected versionversion=9.4 <9.4.12
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.
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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