Vulnerability-Lookup

FKIE_CVE-2026-76261

Vulnerability from fkie_nvd - Published: 2026-08-19 22:17 - Updated: 2026-08-20 14:27

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Summary

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the "admin" or "power" Splunk roles could read Spacebridge asymmetric private keys, which are secrets that compromise affected Spacebridge private-key material stored in the app collection, through the Splunk Secure Gateway App Key Value Store Representational State Transfer (REST) API. The vulnerability is possible on instances upgraded from older Splunk Secure Gateway deployments when the private-key migration remains incomplete, leaving key material in a collection with an insecure default access control list.

References

	URL	Tags
	psirt@cisco.com	https://advisory.splunk.com/advisories/SVD-2026-0801	Vendor Advisory, Mitigation

Impacted products

Vendor	Product	Version
splunk	splunk	*
splunk	splunk	*
splunk	splunk	*
splunk	splunk	*
splunk	splunk_secure_gateway	*
splunk	splunk_secure_gateway	*
splunk	splunk_secure_gateway	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "modules": [
            "Splunk Secure Gateway"
          ],
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.4.2",
              "status": "affected",
              "version": "10.4",
              "versionType": "custom"
            },
            {
              "lessThan": "10.2.6",
              "status": "affected",
              "version": "10.2",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.9",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.14",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Secure Gateway",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "3.10.9",
              "status": "affected",
              "version": "3.10",
              "versionType": "custom"
            },
            {
              "lessThan": "3.9.23",
              "status": "affected",
              "version": "3.9",
              "versionType": "custom"
            },
            {
              "lessThan": "3.8.70",
              "status": "affected",
              "version": "3.8",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "E180CC4C-5B8B-4D69-8535-93DCF3510119",
              "versionEndExcluding": "9.4.14",
              "versionStartIncluding": "9.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "0FD75354-A6EE-49F9-9B8A-31287A845CFB",
              "versionEndExcluding": "10.0.9",
              "versionStartIncluding": "10.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "C8FDA841-04BC-404C-B56D-7869CBD8B56C",
              "versionEndExcluding": "10.2.6",
              "versionStartIncluding": "10.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "209C1DE6-893D-424D-B103-B64A314AD8DC",
              "versionEndExcluding": "10.4.2",
              "versionStartIncluding": "10.4.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FC3EC4A6-9C00-49CB-92DC-97F21C4E1BC1",
              "versionEndExcluding": "3.8.70",
              "versionStartIncluding": "3.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "46A65041-64F2-4459-A7CB-947129FA9BEA",
              "versionEndExcluding": "3.9.23",
              "versionStartIncluding": "3.9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "84D6A11D-4EA4-4D38-B8A1-4E0D2627B245",
              "versionEndExcluding": "3.10.9",
              "versionStartIncluding": "3.10.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the \"admin\" or \"power\" Splunk roles could read Spacebridge asymmetric private keys, which are secrets that compromise affected Spacebridge private-key material stored in the app collection, through the Splunk Secure Gateway App Key Value Store Representational State Transfer (REST) API. The vulnerability is possible on instances upgraded from older Splunk Secure Gateway deployments when the private-key migration remains incomplete, leaving key material in a collection with an insecure default access control list."
    }
  ],
  "id": "CVE-2026-76261",
  "lastModified": "2026-08-20T14:27:18.770",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 3.6,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-08-19T22:17:14.193",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory",
        "Mitigation"
      ],
      "url": "https://advisory.splunk.com/advisories/SVD-2026-0801"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
    }
  ]
}

CVE-2026-76261 (GCVE-0-2026-76261)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-19 21:34

Title

Insecure Default Access Control List through the REST API in Splunk Secure Gateway

Summary

Severity

5.3 (Medium)


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

CWE

CWE-732 - The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://advisory.splunk.com/advisories/SVD-2026-0801

Impacted products

2 products

Vendor	Product	Version
Splunk	Splunk Enterprise	Affected: 10.4 , < 10.4.2 (custom) Affected: 10.2 , < 10.2.6 (custom) Affected: 10.0 , < 10.0.9 (custom) Affected: 9.4 , < 9.4.14 (custom)
Splunk	Splunk Secure Gateway	Affected: 3.10 , < 3.10.9 (custom) Affected: 3.9 , < 3.9.23 (custom) Affected: 3.8 , < 3.8.70 (custom)

Date Public

2026-08-19 00:00

Credits

Gabriel Nitu, Splunk

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "modules": [
            "Splunk Secure Gateway"
          ],
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.4.2",
              "status": "affected",
              "version": "10.4",
              "versionType": "custom"
            },
            {
              "lessThan": "10.2.6",
              "status": "affected",
              "version": "10.2",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.9",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.14",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Secure Gateway",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "3.10.9",
              "status": "affected",
              "version": "3.10",
              "versionType": "custom"
            },
            {
              "lessThan": "3.9.23",
              "status": "affected",
              "version": "3.9",
              "versionType": "custom"
            },
            {
              "lessThan": "3.8.70",
              "status": "affected",
              "version": "3.8",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Gabriel Nitu, Splunk"
        }
      ],
      "datePublic": "2026-08-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/markdown",
              "value": "In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the \"admin\" or \"power\" Splunk roles could read Spacebridge asymmetric private keys, which are secrets that compromise affected Spacebridge private-key material stored in the app collection, through the Splunk Secure Gateway App Key Value Store Representational State Transfer (REST) API. The vulnerability is possible on instances upgraded from older Splunk Secure Gateway deployments when the private-key migration remains incomplete, leaving key material in a collection with an insecure default access control list."
            }
          ],
          "value": "In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the \"admin\" or \"power\" Splunk roles could read Spacebridge asymmetric private keys, which are secrets that compromise affected Spacebridge private-key material stored in the app collection, through the Splunk Secure Gateway App Key Value Store Representational State Transfer (REST) API. The vulnerability is possible on instances upgraded from older Splunk Secure Gateway deployments when the private-key migration remains incomplete, leaving key material in a collection with an insecure default access control list."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-732",
              "description": "The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T21:34:18.416Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "url": "https://advisory.splunk.com/advisories/SVD-2026-0801"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, and 9.4.14, or higher."
        }
      ],
      "source": {
        "advisory": "SVD-2026-0801"
      },
      "title": "Insecure Default Access Control List through the REST API in Splunk Secure Gateway",
      "workarounds": [
        {
          "lang": "en",
          "value": "Upgrade Splunk Secure Gateway to versions 3.10.9, 3.9.23, and 3.8.70, or higher. If you are not able to upgrade Splunk Enterprise or Splunk Secure Gateway, turn off or remove the Splunk Secure Gateway app. See [Manage app and add-on objects](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/meet-splunk-apps/manage-app-and-add-on-objects) in the Splunk documentation. Note: Splunk Mobile, Spacebridge, and Mission Control rely on functionality in the Splunk Secure Gateway app. If you do not use any of these apps, features, or functionality, as a potential mitigation, you may turn off or remove the app."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76261",
    "datePublished": "2026-08-19T21:34:18.416Z",
    "dateReserved": "2026-08-19T12:02:03.619Z",
    "dateUpdated": "2026-08-19T21:34:18.416Z",
    "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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

FKIE_CVE-2026-76261

CVE-2026-76261 (GCVE-0-2026-76261)

Tags

Sightings

Nomenclature