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CVE-2026-20239 (GCVE-0-2026-20239)

Vulnerability from cvelistv5 – Published: 2026-05-20 16:32 – Updated: 2026-05-21 03:55
VLAI
Title
Sensitive Information Disclosure through Log Files in Splunk Enterprise
Summary
In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-20 00:00 UTC
CWE
  • CWE-532 - Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Assigner
References
Impacted products
Vendor Product Version CPE status
Splunk Splunk Enterprise Affected: 10.2 , < 10.2.2 (custom)
Affected: 10.0 , < 10.0.5 (custom)
guessed Create a notification for this product.
Splunk Splunk Cloud Platform Affected: 10.3.2512 , < 10.3.2512.8 (custom)
Affected: 10.2.2510 , < 10.2.2510.11 (custom)
Affected: 10.1.2507 , < 10.1.2507.21 (custom)
Affected: 10.0.2503 , < 10.0.2503.13 (custom)
guessed Create a notification for this product.
Date Public
2026-05-20 00:00
Credits
Charlie Huggard, Splunk
Show details on NVD website
To clipboard 

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Sightings

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Nomenclature

  • 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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