Vulnerability-Lookup

GHSA-3CRW-7XG9-FPXG

Vulnerability from github – Published: 2026-06-10 18:31 – Updated: 2026-06-10 18:31

Details

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.

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.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-20251"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-10T18:16:40Z",
    "severity": "HIGH"
  },
  "details": "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 \u0027admin\u0027 or \u0027power\u0027 Splunk roles could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.\u003cbr\u003e\u003cbr\u003eThe Remote Code Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the \u2018jsonpickle\u2019 Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript Object Notation (JSON) without adequate validation.",
  "id": "GHSA-3crw-7xg9-fpxg",
  "modified": "2026-06-10T18:31:46Z",
  "published": "2026-06-10T18:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20251"
    },
    {
      "type": "WEB",
      "url": "https://advisory.splunk.com/advisories/SVD-2026-0601"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-20251 (GCVE-0-2026-20251)

Vulnerability from cvelistv5 – Published: 2026-06-10 17:16 – Updated: 2026-06-11 03:55

Title

Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway

Summary

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/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 2026-06-10 00:00 UTC

CWE

CWE-502 - The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 443 records in the last 180 days details

References

1 reference

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

Impacted products

3 products

Vendor	Product	Version
Splunk	Splunk Enterprise	Affected: 10.2 , < 10.2.4 (custom) Affected: 10.0 , < 10.0.7 (custom) Affected: 9.4 , < 9.4.12 (custom) Affected: 9.3 , < 9.3.13 (custom)
Splunk	Splunk Cloud Platform	Affected: 10.3.2512 , < 10.3.2512.12 (custom) Affected: 10.2.2510 , < 10.2.2510.14 (custom) Affected: 10.1.2507 , < 10.1.2507.22 (custom) Affected: 9.3.2411 , < 9.3.2411.132 (custom)
Splunk	Splunk Secure Gateway	Affected: 3.10 , < 3.10.6 (custom) Affected: 3.9 , < 3.9.20 (custom) Affected: 3.8 , < 3.8.67 (custom)

Date Public

2026-06-10 00:00

Credits

M Mahdan Argya Syarif (0xbeludan)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20251",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-11T03:55:39.372Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.2.4",
              "status": "affected",
              "version": "10.2",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.7",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.12",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.13",
              "status": "affected",
              "version": "9.3",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Cloud Platform",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.3.2512.12",
              "status": "affected",
              "version": "10.3.2512",
              "versionType": "custom"
            },
            {
              "lessThan": "10.2.2510.14",
              "status": "affected",
              "version": "10.2.2510",
              "versionType": "custom"
            },
            {
              "lessThan": "10.1.2507.22",
              "status": "affected",
              "version": "10.1.2507",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2411.132",
              "status": "affected",
              "version": "9.3.2411",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Secure Gateway",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "3.10.6",
              "status": "affected",
              "version": "3.10",
              "versionType": "custom"
            },
            {
              "lessThan": "3.9.20",
              "status": "affected",
              "version": "3.9",
              "versionType": "custom"
            },
            {
              "lessThan": "3.8.67",
              "status": "affected",
              "version": "3.8",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "M Mahdan Argya Syarif (0xbeludan)"
        }
      ],
      "datePublic": "2026-06-10T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "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 \u0027admin\u0027 or \u0027power\u0027 Splunk roles could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.\u003cbr\u003e\u003cbr\u003eThe Remote Code Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the \u2018jsonpickle\u2019 Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript Object Notation (JSON) without adequate validation."
            }
          ],
          "value": "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 \u0027admin\u0027 or \u0027power\u0027 Splunk roles could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.\u003cbr\u003e\u003cbr\u003eThe Remote Code Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the \u2018jsonpickle\u2019 Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript Object Notation (JSON) without adequate validation."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-10T17:16:00.352Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "url": "https://advisory.splunk.com/advisories/SVD-2026-0601"
        }
      ],
      "source": {
        "advisory": "SVD-2026-0601"
      },
      "title": "Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20251",
    "datePublished": "2026-06-10T17:16:00.352Z",
    "dateReserved": "2025-10-08T11:59:15.401Z",
    "dateUpdated": "2026-06-11T03:55:39.372Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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