High 8.8Published Jun 10, 2026

CVE-2026-20251Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway

Updated under an hour ago (Oct 27, 2026, 6:50 PM ET)

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It affects Splunk Enterprise and 5 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Splunk Enterprise

Exploited in the last 30 days

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, Splunk Cloud Platform versions below 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, and Splunk Secure Gateway versions below 3.10.6, 3.9.20, and 3.8.67, a low-privileged user that does not hold the 'admin' or 'power' Splunk roles could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.<br><br>The Remote Code Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the ‘jsonpickle’ Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript Object Notation (JSON) without adequate validation.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: cisco
NVD analysis: Analyzed
Record last updated: Jun 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Splunk Splunk Enterprise splunk:enterprise (from the name)	from 10.2 before 10.2.4; from 10.0 before 10.0.7; from 9.4 before 9.4.12; from 9.3 before 9.3.13	CNA record
Splunk Splunk Cloud Platform splunk:cloud_platform (from the name)	from 10.3.2512 before 10.3.2512.12; from 10.2.2510 before 10.2.2510.14; from 10.1.2507 before 10.1.2507.22; from 9.3.2411 before 9.3.2411.132	CNA record
Splunk Splunk Secure Gateway splunk:secure_gateway (from the name)	from 3.10 before 3.10.6; from 3.9 before 3.9.20; from 3.8 before 3.8.67	CNA record
splunk splunk splunk:splunk	from 9.3.0 before 9.3.13; from 9.4.0 before 9.4.12; from 10.0.0 before 10.0.7; from 10.2.0 before 10.2.4	NVD
splunk splunk_cloud_platform splunk:splunk_cloud_platform	from 9.3.2411 before 9.3.2411.132; from 10.1.2507 before 10.1.2507.22; from 10.2.2510 before 10.2.2510.14; from 10.3.2512 before 10.3.2512.12	NVD
splunk splunk_secure_gateway splunk:splunk_secure_gateway	from 3.8.0 before 3.8.67; from 3.9.0 before 3.9.20; from 3.10.0 before 3.10.6	NVD

References

References

https://advisory.splunk.com/advisories/SVD-2026-0601	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.