{"id":"CVE-2026-105208","aliases":[],"cve":{"records":[{"id":"CVE-2026-105208","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-04T13:02:21.188Z","published":"2026-10-04T13:10:02.664Z","modified":"2026-10-29T21:15:31.735Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-29T21:15:31.735Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-05T15:43:47.569Z"}],"references":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-jh3m-cr2x-qp88","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/zitadel-before-4.17.3-session-hijacking-via-forgeable-idp-intent-tokens","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-649","description":"Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.17.3","versionStartIncluding":"4.0.0"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionEndIncluding":"3.4.15"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-05T15:43:10.698314Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"ZITADEL 4.x before 4.17.3 and 3.x through 3.4.15 protects IdP intent tokens with unauthenticated, malleable encryption, allowing authenticated users to tamper with their own token so it is accepted for another user's external login intent. An attacker who predicts a victim's in-flight intent identifier and wins a timing race can call /v2/idp_intents or /v2/sessions to steal the victim's IdP tokens or hijack their session.","score":8.7,"severity":"high","published":"2026-10-04T13:10:02.664Z","modified":"2026-10-29T21:15:31.735Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"zitadel","name":"zitadel","platforms":[],"versions":[{"version":"4.0.0","status":"affected","lessThan":"4.17.3","versionType":"semver"},{"version":"4.17.3","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-105208"},{"vendor":"zitadel","name":"zitadel","platforms":[],"versions":[{"version":"3.0.0","status":"affected","lessThanOrEqual":"3.4.15","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-105208"}],"remediation":[],"references":["https://github.com/zitadel/zitadel/security/advisories/GHSA-jh3m-cr2x-qp88","https://www.vulncheck.com/advisories/zitadel-before-4.17.3-session-hijacking-via-forgeable-idp-intent-tokens"],"sources":[{"name":"CVE","id":"CVE-2026-105208","modified":"2026-10-29T21:15:31.735Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-105208"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","score":8.7},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","score":7.7}],"sourceAffected":[],"observedAt":"2026-10-29T21:28:16.091Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T03:10:34.932Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T00:20:33.801Z","attemptedAt":"2026-10-30T00:20:33.801Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T00:20:32.993Z","attemptedAt":"2026-10-30T00:20:32.993Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T00:20:32.937Z","attemptedAt":"2026-10-30T00:20:32.937Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-30T00:20:32.577Z","attemptedAt":"2026-10-30T00:20:32.577Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-105208","url":"https://www.first.org/epss/","probability":0.00081,"percentile":0.00184,"date":"2026-10-29","checkedAt":"2026-10-30T00:20:32.577Z"},{"source":"ENISA EUVD","id":"EUVD-2026-92101","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-92101","modified":"Oct 29, 2026, 9:15:31 PM","score":8.7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","checkedAt":"2026-10-30T00:20:32.937Z"},{"source":"GitHub Advisory Database","id":"GHSA-xv85-7fx2-46j9","url":"https://github.com/advisories/GHSA-xv85-7fx2-46j9","modified":"2026-10-04T15:30:23Z","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","checkedAt":"2026-10-30T00:20:32.993Z"},{"source":"NVD","id":"CVE-2026-105208","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105208","modified":"2026-10-29T21:17:09.543","score":8.7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/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","checkedAt":"2026-10-30T00:20:33.801Z"},{"source":"NVD","id":"CVE-2026-105208","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105208","modified":"2026-10-29T21:17:09.543","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","checkedAt":"2026-10-30T00:20:33.801Z"}],"aiSummary":{"text":"ZITADEL before 4.17.3 has a session hijacking vulnerability via forgeable IdP intent tokens, allowing authenticated users to tamper with their own token. An attacker with authenticated access may steal a victim's IdP tokens or hijack their session. The weakness is due to reliance on unauthenticated encryption without integrity checking.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:35:20.449Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-105208"}]}}