CVE-2026-58066 (GCVE-0-2026-58066)

Vulnerability from cvelistv5 – Published: 2026-07-30 06:03 – Updated: 2026-07-30 06:03
VLAI
Summary
Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.
CWE
  • CWE-287 - Improper Authentication - Generic
Assigner
Impacted products
Vendor Product Version
Rocket.Chat Rocket.Chat Affected: 0 , < 8.7.0 (semver)
Affected: 0 , < 8.6.1 (semver)
Affected: 0 , < 8.5.2 (semver)
Affected: 0 , < 8.4.5 (semver)
Affected: 0 , < 8.3.7 (semver)
Affected: 0 , < 8.2.7 (semver)
Affected: 0 , < 8.1.7 (semver)
Affected: 0 , < 8.0.8 (semver)
Affected: 0 , < 7.10.14 (semver)
Create a notification for this product.
Credits
jayden (0jayden)
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
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          "product": "Rocket.Chat",
          "vendor": "Rocket.Chat",
          "versions": [
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              "status": "affected",
              "version": "0",
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            },
            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.5.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.4.5",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.3.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.2.7",
              "status": "affected",
              "version": "0",
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            },
            {
              "lessThan": "8.1.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.0.8",
              "status": "affected",
              "version": "0",
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            },
            {
              "lessThan": "7.10.14",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "jayden (0jayden)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Rocket.Chat\u0027s SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287 Improper Authentication - Generic",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-30T06:03:45.178Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "url": "https://hackerone.com/reports/3827674"
        },
        {
          "url": "https://github.com/RocketChat/Rocket.Chat/pull/41233"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2026-58066",
    "datePublished": "2026-07-30T06:03:45.178Z",
    "dateReserved": "2026-06-28T15:00:00.719Z",
    "dateUpdated": "2026-07-30T06:03:45.178Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-58066\",\"sourceIdentifier\":\"support@hackerone.com\",\"published\":\"2026-07-30T06:25:55.540\",\"lastModified\":\"2026-07-30T06:25:55.540\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Rocket.Chat\u0027s SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.\"}],\"affected\":[{\"source\":\"support@hackerone.com\",\"affectedData\":[{\"vendor\":\"Rocket.Chat\",\"product\":\"Rocket.Chat\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"8.7.0\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.6.1\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.5.2\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.4.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.3.7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.2.7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.1.7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"8.0.8\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"7.10.14\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"support@hackerone.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"support@hackerone.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"references\":[{\"url\":\"https://github.com/RocketChat/Rocket.Chat/pull/41233\",\"source\":\"support@hackerone.com\"},{\"url\":\"https://hackerone.com/reports/3827674\",\"source\":\"support@hackerone.com\"}]}}"
  }
}



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