Vulnerability-Lookup

FKIE_CVE-2025-20378

Vulnerability from fkie_nvd - Published: 2025-11-12 18:15 - Updated: 2026-10-18 20:10

Severity

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

Summary

In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the `return_to` parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site. To be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will.

References

	URL	Tags
	psirt@cisco.com	https://advisory.splunk.com/advisories/SVD-2025-1101	Vendor Advisory

Impacted products

Vendor	Product	Version
splunk	splunk	*
splunk	splunk	*
splunk	splunk	*
splunk	splunk	10.0.0
splunk	splunk_cloud_platform	*
splunk	splunk_cloud_platform	*
splunk	splunk_cloud_platform	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.0.1",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.5",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.7",
              "status": "affected",
              "version": "9.3",
              "versionType": "custom"
            },
            {
              "lessThan": "9.2.9",
              "status": "affected",
              "version": "9.2",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Cloud Platform",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.0.2503.5",
              "status": "affected",
              "version": "10.0.2503",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2411.111",
              "status": "affected",
              "version": "9.3.2411",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2408.121",
              "status": "affected",
              "version": "9.3.2408",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "FE00218E-F8B2-42DA-9E4E-D7A00B657B93",
              "versionEndExcluding": "9.2.9",
              "versionStartIncluding": "9.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "C6257ADA-AB6E-4679-A41B-BCE79CE8D573",
              "versionEndExcluding": "9.3.7",
              "versionStartIncluding": "9.3.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "30970DF3-6DA7-4FAB-B234-3226F47F9C87",
              "versionEndExcluding": "9.4.5",
              "versionStartIncluding": "9.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk:10.0.0:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "259A3F4B-E4D2-48BC-9AE9-C37DE94987D5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "97D8397F-D372-4481-901A-0BC282B09DD7",
              "versionEndExcluding": "9.3.2408.121",
              "versionStartIncluding": "9.3.2408",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F134529C-FFD7-4B2F-AE4C-6DEA847F4714",
              "versionEndExcluding": "9.3.2411.111",
              "versionStartIncluding": "9.3.2411",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E82D5593-83EE-4B20-ABDD-937AD94D6DB1",
              "versionEndExcluding": "10.0.2503.5",
              "versionStartIncluding": "10.0.2503",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the `return_to` parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site. To be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will."
    },
    {
      "lang": "es",
      "value": "En las versiones de Splunk Enterprise anteriores a 10.0.1, 9.4.5, 9.3.7, 9.2.9, y las versiones de Splunk Cloud Platform anteriores a 10.0.2503.5, 9.3.2411.111 y 9.3.2408.121, un atacante no autenticado podr\u00eda crear una URL maliciosa utilizando el par\u00e1metro \u0027return_to\u0027 del endpoint de inicio de sesi\u00f3n de Splunk Web. Cuando un usuario autenticado visita la URL maliciosa, podr\u00eda causar una redirecci\u00f3n no validada a un sitio malicioso externo. Para tener \u00e9xito, el atacante tiene que enga\u00f1ar a la v\u00edctima para que inicie una solicitud desde su navegador. El atacante no autenticado no deber\u00eda poder explotar la vulnerabilidad a voluntad."
    }
  ],
  "id": "CVE-2025-20378",
  "lastModified": "2026-10-18T20:10:00.110",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-20378",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-11-12T20:47:32.175559Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-11-12T18:15:34.847",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://advisory.splunk.com/advisories/SVD-2025-1101"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}

CVE-2025-20378 (GCVE-0-2025-20378)

Vulnerability from cvelistv5 – Published: 2025-11-12 17:22 – Updated: 2025-11-12 21:04

Title

Open Redirect on Web Login endpoint in Splunk Enterprise

Summary

Severity

3.1 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-12 20:47 UTC

CWE

CWE-601 - A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

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-2025-1101

Impacted products

2 products

Vendor	Product	Version
Splunk	Splunk Enterprise	Affected: 10.0 , < 10.0.1 (custom) Affected: 9.4 , < 9.4.5 (custom) Affected: 9.3 , < 9.3.7 (custom) Affected: 9.2 , < 9.2.9 (custom)
Splunk	Splunk Cloud Platform	Affected: 10.0.2503 , < 10.0.2503.5 (custom) Affected: 9.3.2411 , < 9.3.2411.111 (custom) Affected: 9.3.2408 , < 9.3.2408.121 (custom)

Date Public

2025-11-12 00:00

Credits

Diogo Real (c0rte)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-20378",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-12T20:47:32.175559Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-12T21:04:48.103Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.0.1",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.5",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.7",
              "status": "affected",
              "version": "9.3",
              "versionType": "custom"
            },
            {
              "lessThan": "9.2.9",
              "status": "affected",
              "version": "9.2",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Cloud Platform",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.0.2503.5",
              "status": "affected",
              "version": "10.0.2503",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2411.111",
              "status": "affected",
              "version": "9.3.2411",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2408.121",
              "status": "affected",
              "version": "9.3.2408",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Diogo Real (c0rte)"
        }
      ],
      "datePublic": "2025-11-12T00:00:00.000Z",
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            }
          ],
          "value": "In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the `return_to` parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site. To be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-12T17:22:56.630Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
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          "url": "https://advisory.splunk.com/advisories/SVD-2025-1101"
        }
      ],
      "source": {
        "advisory": "SVD-2025-1101"
      },
      "title": "Open Redirect on Web Login endpoint in Splunk Enterprise"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
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    "datePublished": "2025-11-12T17:22:56.630Z",
    "dateReserved": "2024-10-10T19:15:13.263Z",
    "dateUpdated": "2025-11-12T21:04:48.103Z",
    "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

Sightings and recorded dates, grouped by day · UTC

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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