CVE-2026-48616 (GCVE-0-2026-48616)

Vulnerability from cvelistv5 – Published: 2026-06-16 23:08 – Updated: 2026-06-16 23:08
VLAI
Summary
Rocket.Chat versions <8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rc_room_type=l with rc_rid+rc_token, but the authorization path does not verify that rc_rid matches the requested file's rid. Furthermore, :fileId is predictable via sequential MongoDB IDs, and :name can be anything, allowing unauthenticated discovery of all uploaded files.
Severity
9.3 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
CWE
  • CWE-284 - Improper Access Control - Generic
Assigner
References
Impacted products
Vendor Product Version
Rocket.Chat Rocket.Chat Affected: 0 , < 8.5.1 (semver)
Affected: 0 , < 8.4.4 (semver)
Affected: 0 , < 8.3.6 (semver)
Affected: 0 , < 8.2.6 (semver)
Affected: 0 , < 8.1.6 (semver)
Affected: 0 , < 8.0.7 (semver)
Affected: 0 , < 7.13.9 (semver)
Affected: 0 , < 7.10.13 (semver)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Rocket.Chat",
          "vendor": "Rocket.Chat",
          "versions": [
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              "status": "affected",
              "version": "0",
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              "version": "0",
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              "version": "0",
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            },
            {
              "lessThan": "8.2.6",
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            {
              "lessThan": "8.0.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "7.13.9",
              "status": "affected",
              "version": "0",
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            },
            {
              "lessThan": "7.10.13",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Rocket.Chat versions \u003c8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rc_room_type=l with rc_rid+rc_token, but the authorization path does not verify that rc_rid matches the requested file\u0027s rid. Furthermore, :fileId is predictable via sequential MongoDB IDs, and :name can be anything, allowing unauthenticated discovery of all uploaded files."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284 Improper Access Control - Generic",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-16T23:08:37.908Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "url": "https://hackerone.com/reports/3687142"
        },
        {
          "url": "https://github.com/RocketChat/Rocket.Chat/pull/40889"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2026-48616",
    "datePublished": "2026-06-16T23:08:37.908Z",
    "dateReserved": "2026-05-22T15:00:09.276Z",
    "dateUpdated": "2026-06-16T23:08:37.908Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.