CVE-2026-20204 (GCVE-0-2026-20204)

Vulnerability from cvelistv5 – Published: 2026-04-15 15:17 – Updated: 2026-04-16 03:55
VLAI?
Title
Improper Handling and Insufficient Isolation of Specific Temporary Files in Splunk Enterprise
Summary
In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.5, 10.2.2510.9, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles could potentially perform a Remote Code Execution (RCE) by uploading a malicious file to the `$SPLUNK_HOME/var/run/splunk/apptemp` directory due to improper handling and insufficient isolation of temporary files within the `apptemp` directory.
Severity ?
7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-377 - Creating and using insecure temporary files can leave application and system data vulnerable to attack.
Assigner
References
Impacted products
Vendor Product Version
Splunk Splunk Enterprise Affected: 10.2 , < 10.2.1 (custom)
Affected: 10.0 , < 10.0.5 (custom)
Affected: 9.4 , < 9.4.10 (custom)
Affected: 9.3 , < 9.3.11 (custom)
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    Splunk Splunk Cloud Platform Affected: 10.4.2603 , < Not Affected (custom)
Affected: 10.3.2512 , < 10.3.2512.5 (custom)
Affected: 10.2.2510 , < 10.2.2510.9 (custom)
Affected: 10.1.2507 , < 10.1.2507.19 (custom)
Affected: 10.0.2503 , < 10.0.2503.13 (custom)
Affected: 9.3.2411 , < 9.3.2411.127 (custom)
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Date Public ?
2026-04-15 00:00
Credits
Gabriel Nitu, Splunk
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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