Vulnerability-Lookup

GHSA-66V8-C34P-JMRM

Vulnerability from github – Published: 2026-04-24 09:30 – Updated: 2026-04-24 09:30

Details

A client holding only a read JWT scope can still register itself as a signal provider through the production kuksa.val.v2 OpenProviderStream API by sending ProvideSignalRequest.

Obtain any valid token with only read scope.
Connect to the normal production gRPC API (kuksa.val.v2).
Open OpenProviderStream.
Send ProvideSignalRequest for a target signal ID.
Wait for the broker to forward GetProviderValueRequest.
Reply with attacker-controlled GetProviderValueResponse.
Other clients performing GetValue / GetValues for that signal receive forged data.

Severity ?

8.5 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-6272"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T09:16:04Z",
    "severity": "HIGH"
  },
  "details": "A client holding only a read JWT scope can still register itself as a signal provider through the production kuksa.val.v2 OpenProviderStream API by sending ProvideSignalRequest.\n\n1. Obtain any valid token with only read scope.\n2. Connect to the normal production gRPC API (kuksa.val.v2).\n3. Open OpenProviderStream.\n4. Send ProvideSignalRequest for a target signal ID.\n5. Wait for the broker to forward GetProviderValueRequest.\n6. Reply with attacker-controlled GetProviderValueResponse.\n7. Other clients performing GetValue / GetValues for that signal receive forged data.",
  "id": "GHSA-66v8-c34p-jmrm",
  "modified": "2026-04-24T09:30:30Z",
  "published": "2026-04-24T09:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6272"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/issues/98"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-6272 (GCVE-0-2026-6272)

Vulnerability from cvelistv5 – Published: 2026-04-24 08:28 – Updated: 2026-04-24 11:29

Summary

A client holding only a read JWT scope can still register itself as a signal provider through the production kuksa.val.v2 OpenProviderStream API by sending ProvideSignalRequest. 1. Obtain any valid token with only read scope. 2. Connect to the normal production gRPC API (kuksa.val.v2). 3. Open OpenProviderStream. 4. Send ProvideSignalRequest for a target signal ID. 5. Wait for the broker to forward GetProviderValueRequest. 6. Reply with attacker-controlled GetProviderValueResponse. 7. Other clients performing GetValue / GetValues for that signal receive forged data.

Severity ?

8.5 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

eclipse

References

URL

Tags

https://gitlab.eclipse.org/security/cve-assignmen…

Impacted products

	Vendor	Product	Version
	Eclipse Foundation	Eclipse KUKSA - Databroker	Affected: 0.5.0 , ≤ 0.6.0 (semver)

Credits

Ciwan Öztopal

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-6272",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-24T11:29:08.631521Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-24T11:29:18.312Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://gitlab.eclipse.org/security/cve-assignment/-/issues/98"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Eclipse KUKSA - Databroker",
          "repo": "https://github.com/eclipse-kuksa/kuksa-databroker",
          "vendor": "Eclipse Foundation",
          "versions": [
            {
              "lessThanOrEqual": "0.6.0",
              "status": "affected",
              "version": "0.5.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ciwan \u00d6ztopal"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A client holding only a read JWT scope can still register itself as a signal provider through the production kuksa.val.v2 OpenProviderStream API by sending ProvideSignalRequest.\u003cbr\u003e\u003cbr\u003e1. Obtain any valid token with only read scope.\u003cbr\u003e2. Connect to the normal production gRPC API (kuksa.val.v2).\u003cbr\u003e3. Open OpenProviderStream.\u003cbr\u003e4. Send ProvideSignalRequest for a target signal ID.\u003cbr\u003e5. Wait for the broker to forward GetProviderValueRequest.\u003cbr\u003e6. Reply with attacker-controlled GetProviderValueResponse.\u003cbr\u003e7. Other clients performing GetValue / GetValues for that signal receive forged data."
            }
          ],
          "value": "A client holding only a read JWT scope can still register itself as a signal provider through the production kuksa.val.v2 OpenProviderStream API by sending ProvideSignalRequest.\n\n1. Obtain any valid token with only read scope.\n2. Connect to the normal production gRPC API (kuksa.val.v2).\n3. Open OpenProviderStream.\n4. Send ProvideSignalRequest for a target signal ID.\n5. Wait for the broker to forward GetProviderValueRequest.\n6. Reply with attacker-controlled GetProviderValueResponse.\n7. Other clients performing GetValue / GetValues for that signal receive forged data."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-24T08:28:17.690Z",
        "orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
        "shortName": "eclipse"
      },
      "references": [
        {
          "url": "https://gitlab.eclipse.org/security/cve-assignment/-/issues/98"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
    "assignerShortName": "eclipse",
    "cveId": "CVE-2026-6272",
    "datePublished": "2026-04-24T08:28:17.690Z",
    "dateReserved": "2026-04-14T12:57:50.655Z",
    "dateUpdated": "2026-04-24T11:29:18.312Z",
    "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.

Action not permitted

GHSA-66V8-C34P-JMRM

CVE-2026-6272 (GCVE-0-2026-6272)

Tags

Sightings

Nomenclature