{"id":"CVE-2026-119127","aliases":[],"cve":{"records":[{"id":"CVE-2026-119127","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-29T14:25:14.746Z","published":"2026-10-29T15:58:09.747Z","modified":"2026-11-04T01:25:18.265Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-29T15:58:09.747Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-04T01:25:18.265Z"}],"references":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-mchc-246r-6m76","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/zitadel-4.0.0-before-4.19.5-account-takeover-via-login-v2-host-header-injection","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-640","description":"Weak Password Recovery Mechanism for Forgotten Password","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.19.5","versionStartIncluding":"4.0.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-04T01:25:04.825409Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"ZITADEL 4.0.0 before 4.19.5 Account Takeover via Login V2 Host Header Injection","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"ZITADEL 4.0.0 before 4.19.5 contains a host header injection vulnerability in the Login V2 UI that allows unauthenticated attackers to poison password-reset, invite, and email-verification links by supplying untrusted x-zitadel-public-host, x-zitadel-forward-host, or x-forwarded-host headers. Attackers knowing a victim's login name can point the links in genuine emails at their host, harvest the single-use codes when the links are opened, and take over accounts including instance administrators.","score":8.6,"severity":"high","published":"2026-10-29T15:58:09.747Z","modified":"2026-11-04T01:25:18.265Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"zitadel","name":"zitadel","platforms":[],"versions":[{"version":"4.0.0","status":"affected","lessThan":"4.19.5","versionType":"semver"},{"version":"4.19.5","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-119127"}],"remediation":[],"references":["https://github.com/zitadel/zitadel/security/advisories/GHSA-mchc-246r-6m76","https://www.vulncheck.com/advisories/zitadel-4.0.0-before-4.19.5-account-takeover-via-login-v2-host-header-injection"],"sources":[{"name":"CVE","id":"CVE-2026-119127","modified":"2026-11-04T01:25:18.265Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-119127"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.6},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1}],"sourceAffected":[],"observedAt":"2026-11-04T01:47:16.501Z","kev":{"status":"not-listed","checkedAt":"2026-11-05T11:05:32.134Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-04T01:50:33.147Z","attemptedAt":"2026-11-04T01:50:33.147Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-04T01:50:33.001Z","attemptedAt":"2026-11-04T01:50:33.001Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-04T01:50:33.656Z","attemptedAt":"2026-11-04T01:50:33.656Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-04T01:50:35.676Z","attemptedAt":"2026-11-04T01:50:35.676Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-47m4-8jqx-5r73","url":"https://github.com/advisories/GHSA-47m4-8jqx-5r73","modified":"2026-10-29T18:31:05Z","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","checkedAt":"2026-11-04T01:50:33.001Z"},{"source":"NVD","id":"CVE-2026-119127","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119127","modified":"2026-10-29T16:18:05.603","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/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":"2026-11-04T01:50:33.147Z"},{"source":"NVD","id":"CVE-2026-119127","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119127","modified":"2026-10-29T16:18:05.603","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","checkedAt":"2026-11-04T01:50:33.147Z"},{"source":"ENISA EUVD","id":"EUVD-2026-113194","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-113194","modified":"Oct 29, 2026, 3:58:09 PM","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","checkedAt":"2026-11-04T01:50:33.656Z"},{"source":"FIRST EPSS","id":"CVE-2026-119127","url":"https://www.first.org/epss/","probability":0.00278,"percentile":0.20299,"date":"2026-11-03","checkedAt":"2026-11-04T01:50:35.676Z"}],"aiSummary":{"text":"ZITADEL versions 4.0.0 before 4.19.5 have a host header injection vulnerability in the Login V2 UI, allowing unauthenticated attackers to poison links and potentially take over accounts. Attackers need to know a victim's login name. The vulnerability affects password-reset, invite, and email-verification links.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T10:02:26.936Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-119127"}]}}