Vulnerability-Lookup

FKIE_CVE-2026-20204

Vulnerability from fkie_nvd - Published: 2026-04-15 16:16 - Updated: 2026-04-17 19:04

Severity ?

7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

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.

References

	URL	Tags
	psirt@cisco.com	https://advisory.splunk.com/advisories/SVD-2026-0403	Vendor Advisory

Impacted products

Vendor	Product	Version
splunk	splunk	*
splunk	splunk	*
splunk	splunk	*
splunk	splunk	10.2.0
splunk	splunk_cloud_platform	*
splunk	splunk_cloud_platform	*
splunk	splunk_cloud_platform	*
splunk	splunk_cloud_platform	*
splunk	splunk_cloud_platform	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "9A537203-F31B-44A1-BB9E-C62F4539FA0B",
              "versionEndExcluding": "9.3.11",
              "versionStartIncluding": "9.3.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "0205D102-93C7-42FA-A33E-E517BB7760C4",
              "versionEndExcluding": "9.4.10",
              "versionStartIncluding": "9.4.0",
              "vulnerable": true
            },
            {
              "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:10.2.0:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "122C01E6-CD7E-44B3-BC65-2ACEDFE704E5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6FCB2A3C-8069-4AAC-8746-4B9679DE8116",
              "versionEndExcluding": "9.3.2411.127",
              "versionStartIncluding": "9.3.2411",
              "vulnerable": true
            },
            {
              "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": "2490F8A7-7B04-4E40-9414-02C050DAEB10",
              "versionEndExcluding": "10.1.2507.19",
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            {
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              "versionEndExcluding": "10.2.2510.9",
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              "matchCriteriaId": "D8346F9C-302C-455A-9BE3-82C7C261830B",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-20204",
  "lastModified": "2026-04-17T19:04:00.080",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "psirt@cisco.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-04-15T16:16:34.490",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://advisory.splunk.com/advisories/SVD-2026-0403"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-377"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-04-15 15:17 – Updated: 2026-04-16 03:55

Title

Improper Handling and Insufficient Isolation of Specific Temporary Files in Splunk Enterprise

Summary

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

cisco

References

URL

Tags

https://advisory.splunk.com/advisories/SVD-2026-0403

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)

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)

Date Public ?

2026-04-15 00:00

Credits

Gabriel Nitu, Splunk

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20204",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T00:00:00+00:00",
                "version": "2.0.3"
              },
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            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-16T03:55:29.794Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
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              "lessThan": "10.2.1",
              "status": "affected",
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              "version": "9.4",
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            },
            {
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              "status": "affected",
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            }
          ]
        },
        {
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            },
            {
              "lessThan": "10.3.2512.5",
              "status": "affected",
              "version": "10.3.2512",
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            },
            {
              "lessThan": "10.2.2510.9",
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              "version": "10.2.2510",
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        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
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}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-20204

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

Tags

Sightings

Nomenclature