CVE-2026-20239

Published May 20, 2026

Last updated 3 days ago

CVSS high 7.5

Overview

Description: 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.
Source: psirt@cisco.com
NVD status: Analyzed
Products: splunk, splunk_cloud_platform

Risk scores

CVSS 3.1

Type: Primary
Base score: 6.5
Impact score: 3.6
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Severity: MEDIUM

Weaknesses

psirt@cisco.com: CWE-532

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
            "matchCriteriaId": "D5A01879-50A5-4266-A08C-F55584F442ED",
            "versionEndExcluding": "10.0.5",
            "versionStartIncluding": "10.0.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
            "matchCriteriaId": "9F3A147D-2A67-469A-A223-248DEFB413E0",
            "versionEndExcluding": "10.2.2",
            "versionStartIncluding": "10.2.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "D5C098C2-9ED5-41B4-BE57-984B71027144",
            "versionEndExcluding": "10.0.2503.13",
            "versionStartIncluding": "10.0.2503",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "2C302734-E81B-49DE-B3D6-ACD20DD3A57A",
            "versionEndExcluding": "10.1.2507.21",
            "versionStartIncluding": "10.1.2507",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "5F7423BE-EADA-4D07-A021-D0F9EBBF966F",
            "versionEndExcluding": "10.2.2510.11",
            "versionStartIncluding": "10.2.2510",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "8E24DFCE-B632-49F0-9198-A21636FC3D59",
            "versionEndExcluding": "10.3.2512.8",
            "versionStartIncluding": "10.3.2512",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

Related CVEs

References