{"id":"CVE-2026-58066","state":"PUBLISHED","title":"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","description":"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.","publishedAt":"2026-07-30T06:03:45.178Z","updatedAt":"2026-07-31T03:55:47.931Z","severity":{"score":9.8,"label":"Critical","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"hackerone"},"assigner":"hackerone","products":["Rocket.Chat Rocket.Chat"],"affected":[{"vendor":"Rocket.Chat","product":"Rocket.Chat","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"8.7.0","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.6.1","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.5.2","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.4.5","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.3.7","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.2.7","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.1.7","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.0.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"7.10.14","versionType":"semver"}]}],"references":["https://hackerone.com/reports/3827674","https://github.com/RocketChat/Rocket.Chat/pull/41233"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/58xxx/CVE-2026-58066.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58066","state":"PUBLISHED","datePublished":"2026-07-30T06:03:45.178Z","dateUpdated":"2026-07-31T03:55:47.931Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-06-28T15:00:00.719Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Rocket.Chat","product":"Rocket.Chat","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"8.7.0","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.6.1","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.5.2","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.4.5","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.3.7","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.2.7","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.1.7","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.0.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"7.10.14","versionType":"semver"}]}],"references":[{"url":"https://hackerone.com/reports/3827674"},{"url":"https://github.com/RocketChat/Rocket.Chat/pull/41233"}],"metrics":[{"cvssV3_0":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","type":"CWE","lang":"en","description":"CWE-287 Improper Authentication - Generic"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-07-30T06:03:45.178Z"},"credits":[{"lang":"en","value":"jayden (0jayden)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-30T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-58066"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-31T03:55:47.931Z"}}]}}}