{"id":"CVE-2026-100870","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-100870","generatedAt":"2026-10-28T10:47:51.608Z","title":"Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains.","description":"Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts.","published":"2026-09-27T13:16:38.000Z","lastModified":"2026-09-30T16:17:04.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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/M"},"cwe":["CWE-640"],"affected":[],"epss":{"score":0.00311,"percentile":0.23797,"date":"2026-10-27","history":[{"date":"2026-09-28","score":0.00311,"percentile":0.21495}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-27T13:16:38.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-09-27T13:16:38.240Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://github.com/Sylius/Sylius","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/commit/1255d75b20d3d88a5e5c8d46791504134c838480","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/pull/19215","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/releases/tag/v2.2.9","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/security/advisories/GHSA-77w3-2367-7xvq","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/sylius-before-1.12.25-1.13.17-1.14.20-2.1.16-and-2.2.9-admin-password-reset-poisoning-via-host-header","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100870","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}